231121303402402 has 32 divisors (see below), whose sum is σ = 405479658304512. Its totient is φ = 96734713988304.

The previous prime is 231121303402393. The next prime is 231121303402421. The reversal of 231121303402402 is 204204303121132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23015718 + ... + 31495489.

It is an arithmetic number, because the mean of its divisors is an integer number (12671239322016).

Almost surely, 2^{231121303402402} is an apocalyptic number.

231121303402402 is a deficient number, since it is larger than the sum of its proper divisors (174358354902110).

231121303402402 is a wasteful number, since it uses less digits than its factorization.

231121303402402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54518302.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 231121303402402 its reverse (204204303121132), we get a palindrome (435325606523534).

The spelling of 231121303402402 in words is "two hundred thirty-one trillion, one hundred twenty-one billion, three hundred three million, four hundred two thousand, four hundred two".