231662215402 has 16 divisors (see below), whose sum is σ = 352713406752. Its totient is φ = 114091409520.

The previous prime is 231662215373. The next prime is 231662215427. The reversal of 231662215402 is 204512266132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432213 + ... + 1585735.

It is an arithmetic number, because the mean of its divisors is an integer number (22044587922).

Almost surely, 2^231662215402 is an apocalyptic number.

231662215402 is a deficient number, since it is larger than the sum of its proper divisors (121051191350).

231662215402 is a wasteful number, since it uses less digits than its factorization.

231662215402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164853.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 231662215402 in words is "two hundred thirty-one billion, six hundred sixty-two million, two hundred fifteen thousand, four hundred two".