31416427 has 4 divisors (see below), whose sum is σ = 35904496. Its totient is φ = 26928360.

The previous prime is 31416421. The next prime is 31416431. The reversal of 31416427 is 72461413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31416427 - 2³ = 31416419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31416395 and 31416404.

It is not an unprimeable number, because it can be changed into a prime (31416421) 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, 2244024 + ... + 2244037.

It is an arithmetic number, because the mean of its divisors is an integer number (8976124).

Almost surely, 2^31416427 is an apocalyptic number.

31416427 is a deficient number, since it is larger than the sum of its proper divisors (4488069).

31416427 is an equidigital number, since it uses as much as digits as its factorization.

31416427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488068.

The product of its digits is 4032, while the sum is 28.

The square root of 31416427 is about 5605.0358607238. The cubic root of 31416427 is about 315.5384324496.

The spelling of 31416427 in words is "thirty-one million, four hundred sixteen thousand, four hundred twenty-seven".