31201243402 has 16 divisors (see below), whose sum is σ = 54017430912. Its totient is φ = 13239565200.

The previous prime is 31201243397. The next prime is 31201243477. The reversal of 31201243402 is 20434210213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11031558 + ... + 11034385.

It is an arithmetic number, because the mean of its divisors is an integer number (3376089432).

Almost surely, 2^31201243402 is an apocalyptic number.

31201243402 is a deficient number, since it is larger than the sum of its proper divisors (22816187510).

31201243402 is a wasteful number, since it uses less digits than its factorization.

31201243402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22066053.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31201243402 its reverse (20434210213), we get a palindrome (51635453615).

The spelling of 31201243402 in words is "thirty-one billion, two hundred one million, two hundred forty-three thousand, four hundred two".