31034424431021 has 16 divisors (see below), whose sum is σ = 34524379353600. Its totient is φ = 27660349978800.

The previous prime is 31034424431011. The next prime is 31034424431039. The reversal of 31034424431021 is 12013442443013.

It is not a de Polignac number, because 31034424431021 - 2⁶ = 31034424430957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31034424431011) 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, 110856791 + ... + 111136388.

It is an arithmetic number, because the mean of its divisors is an integer number (2157773709600).

Almost surely, 2^{31034424431021} is an apocalyptic number.

It is an amenable number.

31034424431021 is a deficient number, since it is larger than the sum of its proper divisors (3489954922579).

31034424431021 is a wasteful number, since it uses less digits than its factorization.

31034424431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221993440.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31034424431021 its reverse (12013442443013), we get a palindrome (43047866874034).

The spelling of 31034424431021 in words is "thirty-one trillion, thirty-four billion, four hundred twenty-four million, four hundred thirty-one thousand, twenty-one".