31302034421 has 12 divisors (see below), whose sum is σ = 36419629932. Its totient is φ = 26825113728.

The previous prime is 31302034409. The next prime is 31302034429. The reversal of 31302034421 is 12443020313.

It can be written as a sum of positive squares in 2 ways, for example, as 14874485521 + 16427548900 = 121961^2 + 128170^2 .

It is not a de Polignac number, because 31302034421 - 2³⁴ = 14122165237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302034429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205031 + ... + 323483.

It is an arithmetic number, because the mean of its divisors is an integer number (3034969161).

Almost surely, 2^31302034421 is an apocalyptic number.

It is an amenable number.

31302034421 is a deficient number, since it is larger than the sum of its proper divisors (5117595511).

31302034421 is a wasteful number, since it uses less digits than its factorization.

31302034421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123860 (or 123853 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31302034421 its reverse (12443020313), we get a palindrome (43745054734).

The spelling of 31302034421 in words is "thirty-one billion, three hundred two million, thirty-four thousand, four hundred twenty-one".