31411122140 has 48 divisors (see below), whose sum is σ = 66408672960. Its totient is φ = 12479769600.

The previous prime is 31411122079. The next prime is 31411122179. The reversal of 31411122140 is 4122111413.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4151681 + ... + 4159239.

It is an arithmetic number, because the mean of its divisors is an integer number (1383514020).

Almost surely, 2^31411122140 is an apocalyptic number.

It is an amenable number.

31411122140 is an abundant number, since it is smaller than the sum of its proper divisors (34997550820).

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

31411122140 is a wasteful number, since it uses less digits than its factorization.

31411122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8942 (or 8940 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 31411122140 its reverse (4122111413), we get a palindrome (35533233553).

The spelling of 31411122140 in words is "thirty-one billion, four hundred eleven million, one hundred twenty-two thousand, one hundred forty".