31413221553 has 16 divisors (see below), whose sum is σ = 47888150400. Its totient is φ = 17942768256.

The previous prime is 31413221549. The next prime is 31413221563. The reversal of 31413221553 is 35512231413.

It is not a de Polignac number, because 31413221553 - 2² = 31413221549 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31413221553.

It is not an unprimeable number, because it can be changed into a prime (31413221563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267828 + ... + 366821.

It is an arithmetic number, because the mean of its divisors is an integer number (2993009400).

Almost surely, 2^31413221553 is an apocalyptic number.

It is an amenable number.

31413221553 is a deficient number, since it is larger than the sum of its proper divisors (16474928847).

31413221553 is a wasteful number, since it uses less digits than its factorization.

31413221553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637016.

The product of its digits is 10800, while the sum is 30.

Adding to 31413221553 its reverse (35512231413), we get a palindrome (66925452966).

The spelling of 31413221553 in words is "thirty-one billion, four hundred thirteen million, two hundred twenty-one thousand, five hundred fifty-three".