131021402223 has 32 divisors (see below), whose sum is σ = 189552706560. Its totient is φ = 80310303360.

The previous prime is 131021402209. The next prime is 131021402227. The reversal of 131021402223 is 322204120131.

It is not a de Polignac number, because 131021402223 - 2²⁰ = 131020353647 is a prime.

It is a super-2 number, since 2×131021402223² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131021402223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021402227) 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, 281713 + ... + 584298.

It is an arithmetic number, because the mean of its divisors is an integer number (5923522080).

Almost surely, 2^131021402223 is an apocalyptic number.

131021402223 is a deficient number, since it is larger than the sum of its proper divisors (58531304337).

131021402223 is a wasteful number, since it uses less digits than its factorization.

131021402223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866127.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 131021402223 its reverse (322204120131), we get a palindrome (453225522354).

The spelling of 131021402223 in words is "one hundred thirty-one billion, twenty-one million, four hundred two thousand, two hundred twenty-three".