31313150003242 has 16 divisors (see below), whose sum is σ = 48115623831552. Its totient is φ = 15278650697520.

The previous prime is 31313150003209. The next prime is 31313150003273. The reversal of 31313150003242 is 24230005131313.

It is a super-2 number, since 2×31313150003242² (a number of 28 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 31313150003242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010477278 + ... + 1010508265.

It is an arithmetic number, because the mean of its divisors is an integer number (3007226489472).

Almost surely, 2^{31313150003242} is an apocalyptic number.

31313150003242 is a deficient number, since it is larger than the sum of its proper divisors (16802473828310).

31313150003242 is a wasteful number, since it uses less digits than its factorization.

31313150003242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020985733.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 31313150003242 its reverse (24230005131313), we get a palindrome (55543155134555).

The spelling of 31313150003242 in words is "thirty-one trillion, three hundred thirteen billion, one hundred fifty million, three thousand, two hundred forty-two".