431321191492 has 6 divisors (see below), whose sum is σ = 754812085118. Its totient is φ = 215660595744.

The previous prime is 431321191487. The next prime is 431321191571. The reversal of 431321191492 is 294191123134.

It can be written as a sum of positive squares in only one way, i.e., 424809347076 + 6511844416 = 651774^2 + 80696^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53915148933 + ... + 53915148940.

Almost surely, 2^431321191492 is an apocalyptic number.

It is an amenable number.

431321191492 is a deficient number, since it is larger than the sum of its proper divisors (323490893626).

431321191492 is a wasteful number, since it uses less digits than its factorization.

431321191492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107830297877 (or 107830297875 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The spelling of 431321191492 in words is "four hundred thirty-one billion, three hundred twenty-one million, one hundred ninety-one thousand, four hundred ninety-two".