31100401140 has 24 divisors (see below), whose sum is σ = 87081123360. Its totient is φ = 8293440288.

The previous prime is 31100401117. The next prime is 31100401151. The reversal of 31100401140 is 4110400113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259169950 + ... + 259170069.

It is an arithmetic number, because the mean of its divisors is an integer number (3628380140).

Almost surely, 2^31100401140 is an apocalyptic number.

31100401140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31100401140 is an abundant number, since it is smaller than the sum of its proper divisors (55980722220).

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

31100401140 is a wasteful number, since it uses less digits than its factorization.

31100401140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518340031 (or 518340029 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31100401140 its reverse (4110400113), we get a palindrome (35210801253).

The spelling of 31100401140 in words is "thirty-one billion, one hundred million, four hundred one thousand, one hundred forty".