309113377 has 4 divisors (see below), whose sum is σ = 309148740. Its totient is φ = 309078016.

The previous prime is 309113341. The next prime is 309113381. The reversal of 309113377 is 773311903.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 122080401 + 187032976 = 11049^2 + 13676^2 .

It is a cyclic number.

It is not a de Polignac number, because 309113377 - 2¹⁵ = 309080609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309113327) 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, 6033 + ... + 25585.

It is an arithmetic number, because the mean of its divisors is an integer number (77287185).

Almost surely, 2^309113377 is an apocalyptic number.

It is an amenable number.

309113377 is a deficient number, since it is larger than the sum of its proper divisors (35363).

309113377 is a wasteful number, since it uses less digits than its factorization.

309113377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35362.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 309113377 is about 17581.6204315757. The cubic root of 309113377 is about 676.1441059505.

The spelling of 309113377 in words is "three hundred nine million, one hundred thirteen thousand, three hundred seventy-seven".