31354323513 has 32 divisors (see below), whose sum is σ = 43570252800. Its totient is φ = 20037943296.

The previous prime is 31354323503. The next prime is 31354323523. The reversal of 31354323513 is 31532345313.

It is an interprime number because it is at equal distance from previous prime (31354323503) and next prime (31354323523).

It is not a de Polignac number, because 31354323513 - 2⁸ = 31354323257 is a prime.

It is a super-2 number, since 2×31354323513² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31354323503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11658873 + ... + 11661561.

It is an arithmetic number, because the mean of its divisors is an integer number (1361570400).

Almost surely, 2^31354323513 is an apocalyptic number.

It is an amenable number.

31354323513 is a deficient number, since it is larger than the sum of its proper divisors (12215929287).

31354323513 is a wasteful number, since it uses less digits than its factorization.

31354323513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241.

The product of its digits is 48600, while the sum is 33.

Adding to 31354323513 its reverse (31532345313), we get a palindrome (62886668826).

The spelling of 31354323513 in words is "thirty-one billion, three hundred fifty-four million, three hundred twenty-three thousand, five hundred thirteen".