31401032140 has 12 divisors (see below), whose sum is σ = 65942167536. Its totient is φ = 12560412848.

The previous prime is 31401032137. The next prime is 31401032167. The reversal of 31401032140 is 4123010413.

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, 785025784 + ... + 785025823.

It is an arithmetic number, because the mean of its divisors is an integer number (5495180628).

Almost surely, 2^31401032140 is an apocalyptic number.

It is an amenable number.

31401032140 is an abundant number, since it is smaller than the sum of its proper divisors (34541135396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31401032140 is a wasteful number, since it uses less digits than its factorization.

31401032140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570051616 (or 1570051614 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31401032140 its reverse (4123010413), we get a palindrome (35524042553).

The spelling of 31401032140 in words is "thirty-one billion, four hundred one million, thirty-two thousand, one hundred forty".