20312520434 has 16 divisors (see below), whose sum is σ = 30855382272. Its totient is φ = 10028077248.

The previous prime is 20312520391. The next prime is 20312520467. The reversal of 20312520434 is 43402521302.

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, 111434 + ... + 230309.

It is an arithmetic number, because the mean of its divisors is an integer number (1928461392).

Almost surely, 2^20312520434 is an apocalyptic number.

20312520434 is a deficient number, since it is larger than the sum of its proper divisors (10542861838).

20312520434 is a wasteful number, since it uses less digits than its factorization.

20312520434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342121.

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 20312520434 in words is "twenty billion, three hundred twelve million, five hundred twenty thousand, four hundred thirty-four".