31400054540 has 24 divisors (see below), whose sum is σ = 66047709840. Its totient is φ = 12539527488.

The previous prime is 31400054461. The next prime is 31400054599. The reversal of 31400054540 is 4545000413.

It is a super-2 number, since 2×31400054540² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268330 + ... + 1292849.

It is an arithmetic number, because the mean of its divisors is an integer number (2751987910).

Almost surely, 2^31400054540 is an apocalyptic number.

It is an amenable number.

31400054540 is an abundant number, since it is smaller than the sum of its proper divisors (34647655300).

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

31400054540 is a wasteful number, since it uses less digits than its factorization.

31400054540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561801 (or 2561799 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 31400054540 its reverse (4545000413), we get a palindrome (35945054953).

The spelling of 31400054540 in words is "thirty-one billion, four hundred million, fifty-four thousand, five hundred forty".