31132322013 has 16 divisors (see below), whose sum is σ = 44706130560. Its totient is φ = 19156933824.

The previous prime is 31132322009. The next prime is 31132322017. The reversal of 31132322013 is 31022323113.

It is an interprime number because it is at equal distance from previous prime (31132322009) and next prime (31132322017).

It is not a de Polignac number, because 31132322013 - 2² = 31132322009 is a prime.

It is a super-2 number, since 2×31132322013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132322017) 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, 796123 + ... + 834311.

It is an arithmetic number, because the mean of its divisors is an integer number (2794133160).

Almost surely, 2^31132322013 is an apocalyptic number.

It is an amenable number.

31132322013 is a deficient number, since it is larger than the sum of its proper divisors (13573808547).

31132322013 is a wasteful number, since it uses less digits than its factorization.

31132322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59108.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31132322013 its reverse (31022323113), we get a palindrome (62154645126).

It can be divided in two parts, 311323 and 22013, that added together give a triangular number (333336 = T₈₁₆).

The spelling of 31132322013 in words is "thirty-one billion, one hundred thirty-two million, three hundred twenty-two thousand, thirteen".