1031421513 has 8 divisors (see below), whose sum is σ = 1375941376. Its totient is φ = 687258000.

The previous prime is 1031421497. The next prime is 1031421541. The reversal of 1031421513 is 3151241301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1031421513 - 2⁴ = 1031421497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031421513.

It is not an unprimeable number, because it can be changed into a prime (1031421113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82258 + ... + 93963.

It is an arithmetic number, because the mean of its divisors is an integer number (171992672).

Almost surely, 2^1031421513 is an apocalyptic number.

It is an amenable number.

1031421513 is a deficient number, since it is larger than the sum of its proper divisors (344519863).

1031421513 is a wasteful number, since it uses less digits than its factorization.

1031421513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178175.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1031421513 is about 32115.7517894257. The cubic root of 1031421513 is about 1010.3660121679.

Adding to 1031421513 its reverse (3151241301), we get a palindrome (4182662814).

The spelling of 1031421513 in words is "one billion, thirty-one million, four hundred twenty-one thousand, five hundred thirteen".