31020131023 has 8 divisors (see below), whose sum is σ = 36120476448. Its totient is φ = 26087010144.

The previous prime is 31020131017. The next prime is 31020131041. The reversal of 31020131023 is 32013102013.

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

It is a cyclic number.

It is not a de Polignac number, because 31020131023 - 2⁵ = 31020130991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31020130988 and 31020131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020131423) 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, 41805736 + ... + 41806477.

It is an arithmetic number, because the mean of its divisors is an integer number (4515059556).

Almost surely, 2^31020131023 is an apocalyptic number.

31020131023 is a deficient number, since it is larger than the sum of its proper divisors (5100345425).

31020131023 is an equidigital number, since it uses as much as digits as its factorization.

31020131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83612273.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31020131023 its reverse (32013102013), we get a palindrome (63033233036).

The spelling of 31020131023 in words is "thirty-one billion, twenty million, one hundred thirty-one thousand, twenty-three".