31020331320129 has 16 divisors (see below), whose sum is σ = 41507378096384. Its totient is φ = 20606755482000.

The previous prime is 31020331320109. The next prime is 31020331320133. The reversal of 31020331320129 is 92102313302013.

It is not a de Polignac number, because 31020331320129 - 2¹² = 31020331316033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31020331320096 and 31020331320105.

It is not an unprimeable number, because it can be changed into a prime (31020331320109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48560454 + ... + 49195104.

It is an arithmetic number, because the mean of its divisors is an integer number (2594211131024).

Almost surely, 2^{31020331320129} is an apocalyptic number.

It is an amenable number.

31020331320129 is a deficient number, since it is larger than the sum of its proper divisors (10487046776255).

31020331320129 is a wasteful number, since it uses less digits than its factorization.

31020331320129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692508.

The product of its (nonzero) digits is 5832, while the sum is 30.

The spelling of 31020331320129 in words is "thirty-one trillion, twenty billion, three hundred thirty-one million, three hundred twenty thousand, one hundred twenty-nine".