231720702343436 has 12 divisors (see below), whose sum is σ = 406426604339112. Its totient is φ = 115598815389408.

The previous prime is 231720702343423. The next prime is 231720702343553. The reversal of 231720702343436 is 634343207027132.

It is a super-2 number, since 2×231720702343436² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65383943585 + ... + 65383947128.

It is an arithmetic number, because the mean of its divisors is an integer number (33868883694926).

Almost surely, 2^{231720702343436} is an apocalyptic number.

It is an amenable number.

231720702343436 is a deficient number, since it is larger than the sum of its proper divisors (174705901995676).

231720702343436 is a wasteful number, since it uses less digits than its factorization.

231720702343436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130767891160 (or 130767891158 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 47.

The spelling of 231720702343436 in words is "two hundred thirty-one trillion, seven hundred twenty billion, seven hundred two million, three hundred forty-three thousand, four hundred thirty-six".