31426745 has 8 divisors (see below), whose sum is σ = 43099584. Its totient is φ = 21549744.

The previous prime is 31426729. The next prime is 31426751. The reversal of 31426745 is 54762413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31426745 - 2⁴ = 31426729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448919 + ... + 448988.

It is an arithmetic number, because the mean of its divisors is an integer number (5387448).

Almost surely, 2^31426745 is an apocalyptic number.

31426745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31426745 is a deficient number, since it is larger than the sum of its proper divisors (11672839).

31426745 is an equidigital number, since it uses as much as digits as its factorization.

31426745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897919.

The product of its digits is 20160, while the sum is 32.

The square root of 31426745 is about 5605.9562074636. The cubic root of 31426745 is about 315.5729724392.

The spelling of 31426745 in words is "thirty-one million, four hundred twenty-six thousand, seven hundred forty-five".