31460420 has 12 divisors (see below), whose sum is σ = 66066924. Its totient is φ = 12584160.

The previous prime is 31460413. The next prime is 31460431. The reversal of 31460420 is 2406413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17859076 + 13601344 = 4226^2 + 3688^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1573021 = 31460420 / (3 + 1 + 4 + 6 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 31460392 and 31460401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786491 + ... + 786530.

It is an arithmetic number, because the mean of its divisors is an integer number (5505577).

Almost surely, 2^31460420 is an apocalyptic number.

It is an amenable number.

31460420 is an abundant number, since it is smaller than the sum of its proper divisors (34606504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31460420 is a wasteful number, since it uses less digits than its factorization.

31460420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573030 (or 1573028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 31460420 is about 5608.9589051802. The cubic root of 31460420 is about 315.6856485095.

Adding to 31460420 its reverse (2406413), we get a palindrome (33866833).

The spelling of 31460420 in words is "thirty-one million, four hundred sixty thousand, four hundred twenty".