31130110021031 has 8 divisors (see below), whose sum is σ = 35597797904544. Its totient is φ = 26667554464800.

The previous prime is 31130110021027. The next prime is 31130110021063. The reversal of 31130110021031 is 13012001103113.

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 31130110021031 - 2² = 31130110021027 is a prime.

It is a super-2 number, since 2×31130110021031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130110021001) 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, 1283068820 + ... + 1283093081.

It is an arithmetic number, because the mean of its divisors is an integer number (4449724738068).

Almost surely, 2^{31130110021031} is an apocalyptic number.

31130110021031 is a deficient number, since it is larger than the sum of its proper divisors (4467687883513).

31130110021031 is a wasteful number, since it uses less digits than its factorization.

31130110021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566163641.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31130110021031 its reverse (13012001103113), we get a palindrome (44142111124144).

The spelling of 31130110021031 in words is "thirty-one trillion, one hundred thirty billion, one hundred ten million, twenty-one thousand, thirty-one".