31421204013 has 8 divisors (see below), whose sum is σ = 41901256800. Its totient is φ = 20944310288.

The previous prime is 31421204011. The next prime is 31421204021. The reversal of 31421204013 is 31040212413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31421204013 - 2¹ = 31421204011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421204011) 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 7 ways as a sum of consecutive naturals, for example, 766458 + ... + 806411.

It is an arithmetic number, because the mean of its divisors is an integer number (5237657100).

Almost surely, 2^31421204013 is an apocalyptic number.

It is an amenable number.

31421204013 is a deficient number, since it is larger than the sum of its proper divisors (10480052787).

31421204013 is a wasteful number, since it uses less digits than its factorization.

31421204013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579531.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31421204013 its reverse (31040212413), we get a palindrome (62461416426).

The spelling of 31421204013 in words is "thirty-one billion, four hundred twenty-one million, two hundred four thousand, thirteen".