31442201354421 has 48 divisors (see below), whose sum is σ = 53380578206592. Its totient is φ = 17582092617600.

The previous prime is 31442201354413. The next prime is 31442201354429. The reversal of 31442201354421 is 12445310224413.

31442201354421 is a `hidden beast` number, since 3 + 1 + 4 + 4 + 2 + 201 + 3 + 5 + 442 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (31442201354413) and next prime (31442201354429).

It is not a de Polignac number, because 31442201354421 - 2³ = 31442201354413 is a prime.

It is a super-2 number, since 2×31442201354421² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442201354429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2671665 + ... + 8367926.

It is an arithmetic number, because the mean of its divisors is an integer number (1112095379304).

Almost surely, 2^{31442201354421} is an apocalyptic number.

It is an amenable number.

31442201354421 is a deficient number, since it is larger than the sum of its proper divisors (21938376852171).

31442201354421 is a wasteful number, since it uses less digits than its factorization.

31442201354421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11041834 (or 11041831 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 31442201354421 its reverse (12445310224413), we get a palindrome (43887511578834).

It can be divided in two parts, 3144220 and 1354421, that added together give a square (4498641 = 2121²).

The spelling of 31442201354421 in words is "thirty-one trillion, four hundred forty-two billion, two hundred one million, three hundred fifty-four thousand, four hundred twenty-one".