131213321421403 has 32 divisors (see below), whose sum is σ = 151129633213440. Its totient is φ = 112908548712960.

The previous prime is 131213321421379. The next prime is 131213321421421. The reversal of 131213321421403 is 304124123312131.

It is not a de Polignac number, because 131213321421403 - 2²⁵ = 131213287866971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131213321421443) 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, 10724451 + ... + 19427827.

It is an arithmetic number, because the mean of its divisors is an integer number (4722801037920).

Almost surely, 2^{131213321421403} is an apocalyptic number.

131213321421403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131213321421403 is a deficient number, since it is larger than the sum of its proper divisors (19916311792037).

131213321421403 is a wasteful number, since it uses less digits than its factorization.

131213321421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704387.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 131213321421403 its reverse (304124123312131), we get a palindrome (435337444733534).

The spelling of 131213321421403 in words is "one hundred thirty-one trillion, two hundred thirteen billion, three hundred twenty-one million, four hundred twenty-one thousand, four hundred three".