31513142354 has 16 divisors (see below), whose sum is σ = 47540801880. Its totient is φ = 15666403200.

The previous prime is 31513142327. The next prime is 31513142359. The reversal of 31513142354 is 45324131513.

It can be written as a sum of positive squares in 4 ways, for example, as 24138283225 + 7374859129 = 155365^2 + 85877^2 .

It is a super-2 number, since 2×31513142354² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31513142354.

It is not an unprimeable number, because it can be changed into a prime (31513142359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278432 + ... + 374900.

Almost surely, 2^31513142354 is an apocalyptic number.

31513142354 is a deficient number, since it is larger than the sum of its proper divisors (16027659526).

31513142354 is a wasteful number, since it uses less digits than its factorization.

31513142354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97405.

The product of its digits is 21600, while the sum is 32.

Adding to 31513142354 its reverse (45324131513), we get a palindrome (76837273867).

The spelling of 31513142354 in words is "thirty-one billion, five hundred thirteen million, one hundred forty-two thousand, three hundred fifty-four".