31474369 has 4 divisors (see below), whose sum is σ = 31487940. Its totient is φ = 31460800.

The previous prime is 31474363. The next prime is 31474397. The reversal of 31474369 is 96347413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96347413 = 59 ⋅1633007.

It can be written as a sum of positive squares in 2 ways, for example, as 10890000 + 20584369 = 3300^2 + 4537^2 .

It is a cyclic number.

It is not a de Polignac number, because 31474369 - 2²³ = 23085761 is a prime.

It is a super-2 number, since 2×31474369² = 1981271807896322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31474363) 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, 2332 + ... + 8269.

It is an arithmetic number, because the mean of its divisors is an integer number (7871985).

Almost surely, 2^31474369 is an apocalyptic number.

It is an amenable number.

31474369 is a deficient number, since it is larger than the sum of its proper divisors (13571).

31474369 is a wasteful number, since it uses less digits than its factorization.

31474369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13570.

The product of its digits is 54432, while the sum is 37.

The square root of 31474369 is about 5610.2022245192. The cubic root of 31474369 is about 315.7322981140.

The spelling of 31474369 in words is "thirty-one million, four hundred seventy-four thousand, three hundred sixty-nine".