31200042100430 has 96 divisors (see below), whose sum is σ = 68772050472960. Its totient is φ = 10133469541440.

The previous prime is 31200042100319. The next prime is 31200042100433. The reversal of 31200042100430 is 3400124000213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200042100433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149442215 + ... + 149650845.

It is an arithmetic number, because the mean of its divisors is an integer number (716375525760).

Almost surely, 2^{31200042100430} is an apocalyptic number.

31200042100430 is an abundant number, since it is smaller than the sum of its proper divisors (37572008372530).

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

31200042100430 is a wasteful number, since it uses less digits than its factorization.

31200042100430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224734 (or 224727 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31200042100430 its reverse (3400124000213), we get a palindrome (34600166100643).

The spelling of 31200042100430 in words is "thirty-one trillion, two hundred billion, forty-two million, one hundred thousand, four hundred thirty".