31421254413 has 4 divisors (see below), whose sum is σ = 41895005888. Its totient is φ = 20947502940.

The previous prime is 31421254393. The next prime is 31421254451. The reversal of 31421254413 is 31445212413.

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 not a de Polignac number, because 31421254413 - 2¹⁴ = 31421238029 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 (31421254453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5236875733 + ... + 5236875738.

It is an arithmetic number, because the mean of its divisors is an integer number (10473751472).

Almost surely, 2^31421254413 is an apocalyptic number.

It is an amenable number.

31421254413 is a deficient number, since it is larger than the sum of its proper divisors (10473751475).

31421254413 is a wasteful number, since it uses less digits than its factorization.

31421254413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10473751474.

The product of its digits is 11520, while the sum is 30.

Adding to 31421254413 its reverse (31445212413), we get a palindrome (62866466826).

The spelling of 31421254413 in words is "thirty-one billion, four hundred twenty-one million, two hundred fifty-four thousand, four hundred thirteen".