231964207506 has 24 divisors (see below), whose sum is σ = 504457487820. Its totient is φ = 77033960736.

The previous prime is 231964207499. The next prime is 231964207549. The reversal of 231964207506 is 605702469132.

231964207506 is a `hidden beast` number, since 2 + 31 + 96 + 4 + 20 + 7 + 506 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 231510134025 + 454073481 = 481155^2 + 21309^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23948505 + ... + 23958188.

Almost surely, 2^231964207506 is an apocalyptic number.

231964207506 is an abundant number, since it is smaller than the sum of its proper divisors (272493280314).

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

231964207506 is a wasteful number, since it uses less digits than its factorization.

231964207506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47906970 (or 47906967 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 231964207506 in words is "two hundred thirty-one billion, nine hundred sixty-four million, two hundred seven thousand, five hundred six".