231244403402 has 16 divisors (see below), whose sum is σ = 352169975232. Its totient is φ = 113855649600.

The previous prime is 231244403309. The next prime is 231244403503. The reversal of 231244403402 is 204304442132.

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, 67283 + ... + 683385.

It is an arithmetic number, because the mean of its divisors is an integer number (22010623452).

Almost surely, 2^231244403402 is an apocalyptic number.

231244403402 is a deficient number, since it is larger than the sum of its proper divisors (120925571830).

231244403402 is a wasteful number, since it uses less digits than its factorization.

231244403402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618973.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 231244403402 its reverse (204304442132), we get a palindrome (435548845534).

The spelling of 231244403402 in words is "two hundred thirty-one billion, two hundred forty-four million, four hundred three thousand, four hundred two".