10423156531 has 4 divisors (see below), whose sum is σ = 10445476392. Its totient is φ = 10400836672.

The previous prime is 10423156519. The next prime is 10423156547. The reversal of 10423156531 is 13565132401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10423156531 is a prime.

It is a super-2 number, since 2×10423156531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10423156493 and 10423156502.

It is not an unprimeable number, because it can be changed into a prime (10423156561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11159230 + ... + 11160163.

It is an arithmetic number, because the mean of its divisors is an integer number (2611369098).

Almost surely, 2^10423156531 is an apocalyptic number.

10423156531 is a deficient number, since it is larger than the sum of its proper divisors (22319861).

10423156531 is an equidigital number, since it uses as much as digits as its factorization.

10423156531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22319860.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 10423156531 its reverse (13565132401), we get a palindrome (23988288932).

The spelling of 10423156531 in words is "ten billion, four hundred twenty-three million, one hundred fifty-six thousand, five hundred thirty-one".