31401310144 has 28 divisors (see below), whose sum is σ = 62320209624. Its totient is φ = 15698580224.

The previous prime is 31401310139. The next prime is 31401310169. The reversal of 31401310144 is 44101310413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531762 + ... + 587854.

Almost surely, 2^31401310144 is an apocalyptic number.

It is an amenable number.

31401310144 is a deficient number, since it is larger than the sum of its proper divisors (30918899480).

31401310144 is an equidigital number, since it uses as much as digits as its factorization.

31401310144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64852 (or 64842 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31401310144 its reverse (44101310413), we get a palindrome (75502620557).

The spelling of 31401310144 in words is "thirty-one billion, four hundred one million, three hundred ten thousand, one hundred forty-four".