31420421131 has 8 divisors (see below), whose sum is σ = 34838738928. Its totient is φ = 28095756000.

The previous prime is 31420421129. The next prime is 31420421159. The reversal of 31420421131 is 13112402413.

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 31420421131 - 2¹ = 31420421129 is a prime.

It is a super-2 number, since 2×31420421131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31420421191) 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, 23412460 + ... + 23413801.

It is an arithmetic number, because the mean of its divisors is an integer number (4354842366).

Almost surely, 2^31420421131 is an apocalyptic number.

31420421131 is a deficient number, since it is larger than the sum of its proper divisors (3418317797).

31420421131 is a wasteful number, since it uses less digits than its factorization.

31420421131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46826333.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31420421131 its reverse (13112402413), we get a palindrome (44532823544).

The spelling of 31420421131 in words is "thirty-one billion, four hundred twenty million, four hundred twenty-one thousand, one hundred thirty-one".