31401231404 has 12 divisors (see below), whose sum is σ = 54955597200. Its totient is φ = 15699632208.

The previous prime is 31401231383. The next prime is 31401231469. The reversal of 31401231404 is 40413210413.

It is a super-2 number, since 2×31401231404² (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 31401231404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171539 + ... + 303690.

It is an arithmetic number, because the mean of its divisors is an integer number (4579633100).

Almost surely, 2^31401231404 is an apocalyptic number.

It is an amenable number.

31401231404 is a deficient number, since it is larger than the sum of its proper divisors (23554365796).

31401231404 is a wasteful number, since it uses less digits than its factorization.

31401231404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491752 (or 491750 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31401231404 its reverse (40413210413), we get a palindrome (71814441817).

The spelling of 31401231404 in words is "thirty-one billion, four hundred one million, two hundred thirty-one thousand, four hundred four".