1540031123532 has 24 divisors (see below), whose sum is σ = 3920079223872. Its totient is φ = 466676098000.

The previous prime is 1540031123497. The next prime is 1540031123549. The reversal of 1540031123532 is 2353211300451.

It is a super-2 number, since 2×1540031123532² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1540031123532.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5833451094 + ... + 5833451357.

It is an arithmetic number, because the mean of its divisors is an integer number (163336634328).

Almost surely, 2^{1540031123532} is an apocalyptic number.

1540031123532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540031123532 is an abundant number, since it is smaller than the sum of its proper divisors (2380048100340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540031123532 is a wasteful number, since it uses less digits than its factorization.

1540031123532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666902469 (or 11666902467 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1540031123532 its reverse (2353211300451), we get a palindrome (3893242423983).

The spelling of 1540031123532 in words is "one trillion, five hundred forty billion, thirty-one million, one hundred twenty-three thousand, five hundred thirty-two".