131021232100403 has 4 divisors (see below), whose sum is σ = 131026730056848. Its totient is φ = 131015734143960.

The previous prime is 131021232100379. The next prime is 131021232100417. The reversal of 131021232100403 is 304001232120131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131021232100403 - 2²⁰ = 131021231051827 is a prime.

It is a super-2 number, since 2×131021232100403² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131021232100103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2748942476 + ... + 2748990137.

It is an arithmetic number, because the mean of its divisors is an integer number (32756682514212).

Almost surely, 2^{131021232100403} is an apocalyptic number.

131021232100403 is a deficient number, since it is larger than the sum of its proper divisors (5497956445).

131021232100403 is an equidigital number, since it uses as much as digits as its factorization.

131021232100403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497956444.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 131021232100403 its reverse (304001232120131), we get a palindrome (435022464220534).

The spelling of 131021232100403 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred thirty-two million, one hundred thousand, four hundred three".