31213311434 has 16 divisors (see below), whose sum is σ = 48380361216. Its totient is φ = 15087567600.

The previous prime is 31213311421. The next prime is 31213311449. The reversal of 31213311434 is 43411331213.

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, 200357 + ... + 320264.

It is an arithmetic number, because the mean of its divisors is an integer number (3023772576).

Almost surely, 2^31213311434 is an apocalyptic number.

31213311434 is a deficient number, since it is larger than the sum of its proper divisors (17167049782).

31213311434 is a wasteful number, since it uses less digits than its factorization.

31213311434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521621.

The product of its digits is 2592, while the sum is 26.

Adding to 31213311434 its reverse (43411331213), we get a palindrome (74624642647).

The spelling of 31213311434 in words is "thirty-one billion, two hundred thirteen million, three hundred eleven thousand, four hundred thirty-four".