231311940601 has 27 divisors (see below), whose sum is σ = 271714799727. Its totient is φ = 196342619760.

The previous prime is 231311940599. The next prime is 231311940611. The reversal of 231311940601 is 106049113132.

The square root of 231311940601 is 480949.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 91899316201 + 139412624400 = 303149^2 + 373380^2 .

It is not a de Polignac number, because 231311940601 - 2¹ = 231311940599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231311940611) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 427563391 + ... + 427563931.

It is an arithmetic number, because the mean of its divisors is an integer number (10063511101).

Almost surely, 2^231311940601 is an apocalyptic number.

231311940601 is the 480949-th square number.

231311940601 is the 240475-th centered octagonal number.

It is an amenable number.

231311940601 is a deficient number, since it is larger than the sum of its proper divisors (40402859126).

231311940601 is an frugal number, since it uses more digits than its factorization.

231311940601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 231311940601 in words is "two hundred thirty-one billion, three hundred eleven million, nine hundred forty thousand, six hundred one".