309140901 has 16 divisors (see below), whose sum is σ = 462525120. Its totient is φ = 204051600.

The previous prime is 309140893. The next prime is 309140921. The reversal of 309140901 is 109041903.

It is not a de Polignac number, because 309140901 - 2³ = 309140893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309140921) 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, 53955 + ... + 59408.

It is an arithmetic number, because the mean of its divisors is an integer number (28907820).

Almost surely, 2^309140901 is an apocalyptic number.

It is an amenable number.

309140901 is a deficient number, since it is larger than the sum of its proper divisors (153384219).

309140901 is a wasteful number, since it uses less digits than its factorization.

309140901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113473 (or 113467 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 309140901 is about 17582.4031633904. The cubic root of 309140901 is about 676.1641737093.

The spelling of 309140901 in words is "three hundred nine million, one hundred forty thousand, nine hundred one".