31454213 has 4 divisors (see below), whose sum is σ = 35947680. Its totient is φ = 26960748.

The previous prime is 31454201. The next prime is 31454219. The reversal of 31454213 is 31245413.

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 a cyclic number.

It is not a de Polignac number, because 31454213 - 2⁴ = 31454197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454219) 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, 2246723 + ... + 2246736.

It is an arithmetic number, because the mean of its divisors is an integer number (8986920).

Almost surely, 2^31454213 is an apocalyptic number.

It is an amenable number.

31454213 is a deficient number, since it is larger than the sum of its proper divisors (4493467).

31454213 is an equidigital number, since it uses as much as digits as its factorization.

31454213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493466.

The product of its digits is 1440, while the sum is 23.

The square root of 31454213 is about 5608.4055666473. The cubic root of 31454213 is about 315.6648860223.

Adding to 31454213 its reverse (31245413), we get a palindrome (62699626).

The spelling of 31454213 in words is "thirty-one million, four hundred fifty-four thousand, two hundred thirteen".