31474430 has 32 divisors (see below), whose sum is σ = 61768224. Its totient is φ = 11477376.

The previous prime is 31474423. The next prime is 31474433. The reversal of 31474430 is 3447413.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 31474430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31474433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9332 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (1930257).

Almost surely, 2^31474430 is an apocalyptic number.

31474430 is a deficient number, since it is larger than the sum of its proper divisors (30293794).

31474430 is a wasteful number, since it uses less digits than its factorization.

31474430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 31474430 is about 5610.2076610407. The cubic root of 31474430 is about 315.7325020859.

The spelling of 31474430 in words is "thirty-one million, four hundred seventy-four thousand, four hundred thirty".