31420024341021 has 32 divisors (see below), whose sum is σ = 50138857635840. Its totient is φ = 19389636327600.

The previous prime is 31420024341007. The next prime is 31420024341049. The reversal of 31420024341021 is 12014342002413.

31420024341021 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 0 + 0 + 243 + 410 + 2 + 1 = 666.

It is not a de Polignac number, because 31420024341021 - 2¹⁷ = 31420024209949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31420024341091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816042885 + ... + 816081386.

It is an arithmetic number, because the mean of its divisors is an integer number (1566839301120).

Almost surely, 2^{31420024341021} is an apocalyptic number.

31420024341021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31420024341021 is a deficient number, since it is larger than the sum of its proper divisors (18718833294819).

31420024341021 is a wasteful number, since it uses less digits than its factorization.

31420024341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632124334 (or 1632124328 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 31420024341021 its reverse (12014342002413), we get a palindrome (43434366343434).

The spelling of 31420024341021 in words is "thirty-one trillion, four hundred twenty billion, twenty-four million, three hundred forty-one thousand, twenty-one".