31000046 has 48 divisors (see below), whose sum is σ = 59713200. Its totient is φ = 11934720.

The previous prime is 31000003. The next prime is 31000063. The reversal of 31000046 is 64000013.

It is a super-2 number, since 2×31000046² = 1922005704004232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160526 + ... + 160718.

It is an arithmetic number, because the mean of its divisors is an integer number (1244025).

Almost surely, 2^31000046 is an apocalyptic number.

31000046 is a deficient number, since it is larger than the sum of its proper divisors (28713154).

31000046 is a wasteful number, since it uses less digits than its factorization.

31000046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31000046 is about 5567.7684937504. The cubic root of 31000046 is about 314.1382206192.

Adding to 31000046 its reverse (64000013), we get a palindrome (95000059).

The spelling of 31000046 in words is "thirty-one million, forty-six", and thus it is an aban number and an uban number.