309700342491 has 16 divisors (see below), whose sum is σ = 415115206176. Its totient is φ = 205376403456.

The previous prime is 309700342489. The next prime is 309700342537. The reversal of 309700342491 is 194243007903.

It is not a de Polignac number, because 309700342491 - 2¹ = 309700342489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (309700341491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7560421 + ... + 7601273.

It is an arithmetic number, because the mean of its divisors is an integer number (25944700386).

Almost surely, 2^309700342491 is an apocalyptic number.

309700342491 is a deficient number, since it is larger than the sum of its proper divisors (105414863685).

309700342491 is a wasteful number, since it uses less digits than its factorization.

309700342491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54142.

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 309700342491 in words is "three hundred nine billion, seven hundred million, three hundred forty-two thousand, four hundred ninety-one".