231211240310402 has 64 divisors (see below), whose sum is σ = 392153591808000. Its totient is φ = 101331854426880.

The previous prime is 231211240310399. The next prime is 231211240310431. The reversal of 231211240310402 is 204013042112132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19072874 + ... + 28743642.

It is an arithmetic number, because the mean of its divisors is an integer number (6127399872000).

Almost surely, 2^{231211240310402} is an apocalyptic number.

231211240310402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231211240310402 is a deficient number, since it is larger than the sum of its proper divisors (160942351497598).

231211240310402 is a wasteful number, since it uses less digits than its factorization.

231211240310402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671151.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 231211240310402 its reverse (204013042112132), we get a palindrome (435224282422534).

The spelling of 231211240310402 in words is "two hundred thirty-one trillion, two hundred eleven billion, two hundred forty million, three hundred ten thousand, four hundred two".