31474137 has 4 divisors (see below), whose sum is σ = 41965520. Its totient is φ = 20982756.

The previous prime is 31474129. The next prime is 31474141. The reversal of 31474137 is 73147413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31474137 - 2³ = 31474129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31404137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5245687 + ... + 5245692.

It is an arithmetic number, because the mean of its divisors is an integer number (10491380).

Almost surely, 2^31474137 is an apocalyptic number.

It is an amenable number.

31474137 is a deficient number, since it is larger than the sum of its proper divisors (10491383).

31474137 is a wasteful number, since it uses less digits than its factorization.

31474137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10491382.

The product of its digits is 7056, while the sum is 30.

The square root of 31474137 is about 5610.1815478646. The cubic root of 31474137 is about 315.7315223498.

The spelling of 31474137 in words is "thirty-one million, four hundred seventy-four thousand, one hundred thirty-seven".