31311134032 has 10 divisors (see below), whose sum is σ = 60665322218. Its totient is φ = 15655567008.

The previous prime is 31311133991. The next prime is 31311134039. The reversal of 31311134032 is 23043111313.

It can be written as a sum of positive squares in only one way, i.e., 24553636416 + 6757497616 = 156696^2 + 82204^2 .

It is a super-2 number, since 2×31311134032² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31311133994 and 31311134012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31311134039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978472923 + ... + 978472954.

Almost surely, 2^31311134032 is an apocalyptic number.

It is an amenable number.

31311134032 is a deficient number, since it is larger than the sum of its proper divisors (29354188186).

31311134032 is a wasteful number, since it uses less digits than its factorization.

31311134032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956945885 (or 1956945879 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31311134032 its reverse (23043111313), we get a palindrome (54354245345).

The spelling of 31311134032 in words is "thirty-one billion, three hundred eleven million, one hundred thirty-four thousand, thirty-two".