31421004013 has 8 divisors (see below), whose sum is σ = 37147985280. Its totient is φ = 26003589360.

The previous prime is 31421003993. The next prime is 31421004019. The reversal of 31421004013 is 31040012413.

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

It is a de Polignac number, because none of the positive numbers 2^k-31421004013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421004019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77391433 + ... + 77391838.

It is an arithmetic number, because the mean of its divisors is an integer number (4643498160).

Almost surely, 2^31421004013 is an apocalyptic number.

It is an amenable number.

31421004013 is a deficient number, since it is larger than the sum of its proper divisors (5726981267).

31421004013 is a wasteful number, since it uses less digits than its factorization.

31421004013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154783307.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31421004013 its reverse (31040012413), we get a palindrome (62461016426).

The spelling of 31421004013 in words is "thirty-one billion, four hundred twenty-one million, four thousand, thirteen".