31484213 has 4 divisors (see below), whose sum is σ = 32216448. Its totient is φ = 30751980.

The previous prime is 31484209. The next prime is 31484237. The reversal of 31484213 is 31248413.

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 31484213 - 2² = 31484209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31484203) 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, 366053 + ... + 366138.

It is an arithmetic number, because the mean of its divisors is an integer number (8054112).

Almost surely, 2^31484213 is an apocalyptic number.

It is an amenable number.

31484213 is a deficient number, since it is larger than the sum of its proper divisors (732235).

31484213 is an equidigital number, since it uses as much as digits as its factorization.

31484213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732234.

The product of its digits is 2304, while the sum is 26.

The square root of 31484213 is about 5611.0794861595. The cubic root of 31484213 is about 315.7652110828.

The spelling of 31484213 in words is "thirty-one million, four hundred eighty-four thousand, two hundred thirteen".