31354254421 has 4 divisors (see below), whose sum is σ = 35833433632. Its totient is φ = 26875075212.

The previous prime is 31354254403. The next prime is 31354254457. The reversal of 31354254421 is 12445245313.

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 31354254421 - 2⁷ = 31354254293 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 (31354254221) 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, 2239589595 + ... + 2239589608.

It is an arithmetic number, because the mean of its divisors is an integer number (8958358408).

Almost surely, 2^31354254421 is an apocalyptic number.

It is an amenable number.

31354254421 is a deficient number, since it is larger than the sum of its proper divisors (4479179211).

31354254421 is an equidigital number, since it uses as much as digits as its factorization.

31354254421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479179210.

The product of its digits is 57600, while the sum is 34.

Adding to 31354254421 its reverse (12445245313), we get a palindrome (43799499734).

The spelling of 31354254421 in words is "thirty-one billion, three hundred fifty-four million, two hundred fifty-four thousand, four hundred twenty-one".