31451054213 has 4 divisors (see below), whose sum is σ = 31457780640. Its totient is φ = 31444327788.

The previous prime is 31451054183. The next prime is 31451054237. The reversal of 31451054213 is 31245015413.

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 31451054213 - 2⁶ = 31451054149 is a prime.

It is a super-3 number, since 3×31451054213³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (31451054273) 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, 3356195 + ... + 3365552.

It is an arithmetic number, because the mean of its divisors is an integer number (7864445160).

Almost surely, 2^31451054213 is an apocalyptic number.

It is an amenable number.

31451054213 is a deficient number, since it is larger than the sum of its proper divisors (6726427).

31451054213 is an equidigital number, since it uses as much as digits as its factorization.

31451054213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6726426.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 31451054213 its reverse (31245015413), we get a palindrome (62696069626).

The spelling of 31451054213 in words is "thirty-one billion, four hundred fifty-one million, fifty-four thousand, two hundred thirteen".