10031023531 has 4 divisors (see below), whose sum is σ = 10264303192. Its totient is φ = 9797743872.

The previous prime is 10031023507. The next prime is 10031023559. The reversal of 10031023531 is 13532013001.

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

It is a cyclic number.

It is not a de Polignac number, because 10031023531 - 2⁷ = 10031023403 is a prime.

It is a super-2 number, since 2×10031023531² (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 = 10031023499 and 10031023508.

It is not an unprimeable number, because it can be changed into a prime (10031023501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116639766 + ... + 116639851.

It is an arithmetic number, because the mean of its divisors is an integer number (2566075798).

Almost surely, 2^10031023531 is an apocalyptic number.

10031023531 is a deficient number, since it is larger than the sum of its proper divisors (233279661).

10031023531 is an equidigital number, since it uses as much as digits as its factorization.

10031023531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233279660.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 10031023531 its reverse (13532013001), we get a palindrome (23563036532).

The spelling of 10031023531 in words is "ten billion, thirty-one million, twenty-three thousand, five hundred thirty-one".