31020204442 has 16 divisors (see below), whose sum is σ = 47249127072. Its totient is φ = 15270734160.

The previous prime is 31020204427. The next prime is 31020204461. The reversal of 31020204442 is 24440202013.

It is a happy number.

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, 205717 + ... + 323047.

It is an arithmetic number, because the mean of its divisors is an integer number (2953070442).

Almost surely, 2^31020204442 is an apocalyptic number.

31020204442 is a deficient number, since it is larger than the sum of its proper divisors (16228922630).

31020204442 is a wasteful number, since it uses less digits than its factorization.

31020204442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119373.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 31020204442 its reverse (24440202013), we get a palindrome (55460406455).

The spelling of 31020204442 in words is "thirty-one billion, twenty million, two hundred four thousand, four hundred forty-two".