31313411031 has 16 divisors (see below), whose sum is σ = 48251808000. Its totient is φ = 17692327488.

The previous prime is 31313410987. The next prime is 31313411047. The reversal of 31313411031 is 13011431313.

It is not a de Polignac number, because 31313411031 - 2¹⁹ = 31312886743 is a prime.

It is a super-2 number, since 2×31313411031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 31313410989 and 31313411007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313411071) 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, 8375181 + ... + 8378918.

It is an arithmetic number, because the mean of its divisors is an integer number (3015738000).

Almost surely, 2^31313411031 is an apocalyptic number.

31313411031 is a deficient number, since it is larger than the sum of its proper divisors (16938396969).

31313411031 is a wasteful number, since it uses less digits than its factorization.

31313411031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16754198.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31313411031 its reverse (13011431313), we get a palindrome (44324842344).

The spelling of 31313411031 in words is "thirty-one billion, three hundred thirteen million, four hundred eleven thousand, thirty-one".