30431155412 has 36 divisors (see below), whose sum is σ = 61972927380. Its totient is φ = 13036915584.

The previous prime is 30431155397. The next prime is 30431155429. The reversal of 30431155412 is 21455113403.

It can be written as a sum of positive squares in 2 ways, for example, as 18180207556 + 12250947856 = 134834^2 + 110684^2 .

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, 506438 + ... + 563330.

It is an arithmetic number, because the mean of its divisors is an integer number (1721470205).

Almost surely, 2^30431155412 is an apocalyptic number.

It is an amenable number.

30431155412 is an abundant number, since it is smaller than the sum of its proper divisors (31541771968).

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

30431155412 is a wasteful number, since it uses less digits than its factorization.

30431155412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59640 (or 59631 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 30431155412 its reverse (21455113403), we get a palindrome (51886268815).

The spelling of 30431155412 in words is "thirty billion, four hundred thirty-one million, one hundred fifty-five thousand, four hundred twelve".