307131707 has 4 divisors (see below), whose sum is σ = 325198296. Its totient is φ = 289065120.

The previous prime is 307131691. The next prime is 307131731. The reversal of 307131707 is 707131703.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707131703 = 61 ⋅11592323.

It is a cyclic number.

It is not a de Polignac number, because 307131707 - 2⁴ = 307131691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 307131707.

It is not an unprimeable number, because it can be changed into a prime (307131107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9033269 + ... + 9033302.

It is an arithmetic number, because the mean of its divisors is an integer number (81299574).

Almost surely, 2^307131707 is an apocalyptic number.

307131707 is a deficient number, since it is larger than the sum of its proper divisors (18066589).

307131707 is a wasteful number, since it uses less digits than its factorization.

307131707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18066588.

The product of its (nonzero) digits is 3087, while the sum is 29.

The square root of 307131707 is about 17525.1735226787. The cubic root of 307131707 is about 674.6961280609.

The spelling of 307131707 in words is "three hundred seven million, one hundred thirty-one thousand, seven hundred seven".