131421211602 has 64 divisors (see below), whose sum is σ = 280145174400. Its totient is φ = 40957885440.

The previous prime is 131421211567. The next prime is 131421211633. The reversal of 131421211602 is 206112124131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19732549 + ... + 19739207.

It is an arithmetic number, because the mean of its divisors is an integer number (4377268350).

Almost surely, 2^131421211602 is an apocalyptic number.

131421211602 is an abundant number, since it is smaller than the sum of its proper divisors (148723962798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131421211602 is a wasteful number, since it uses less digits than its factorization.

131421211602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 131421211602 its reverse (206112124131), we get a palindrome (337533335733).

The spelling of 131421211602 in words is "one hundred thirty-one billion, four hundred twenty-one million, two hundred eleven thousand, six hundred two".