31254220430132 has 36 divisors (see below), whose sum is σ = 63795238671780. Its totient is φ = 13358755234944.

The previous prime is 31254220430071. The next prime is 31254220430143. The reversal of 31254220430132 is 23103402245213.

It can be written as a sum of positive squares in 2 ways, for example, as 17217553555216 + 14036666874916 = 4149404^2 + 3746554^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213680657 + ... + 213826872.

It is an arithmetic number, because the mean of its divisors is an integer number (1772089963105).

Almost surely, 2^{31254220430132} is an apocalyptic number.

It is an amenable number.

31254220430132 is an abundant number, since it is smaller than the sum of its proper divisors (32541018241648).

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

31254220430132 is a wasteful number, since it uses less digits than its factorization.

31254220430132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427507920 (or 427507911 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 31254220430132 its reverse (23103402245213), we get a palindrome (54357622675345).

The spelling of 31254220430132 in words is "thirty-one trillion, two hundred fifty-four billion, two hundred twenty million, four hundred thirty thousand, one hundred thirty-two".