231311940602 has 4 divisors (see below), whose sum is σ = 346967910906. Its totient is φ = 115655970300.

The previous prime is 231311940599. The next prime is 231311940611. The reversal of 231311940602 is 206049113132.

It is a Cunningham number, because it is equal to 480949²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 231311940601 + 1 = 480949^2 + 1^2 .

It is a super-2 number, since 2×231311940602² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57827985149 + ... + 57827985152.

Almost surely, 2^231311940602 is an apocalyptic number.

231311940602 is a deficient number, since it is larger than the sum of its proper divisors (115655970304).

231311940602 is a wasteful number, since it uses less digits than its factorization.

231311940602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115655970303.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 231311940602 in words is "two hundred thirty-one billion, three hundred eleven million, nine hundred forty thousand, six hundred two".