131021433213403 has 4 divisors (see below), whose sum is σ = 131024972552760. Its totient is φ = 131017893874048.

The previous prime is 131021433213371. The next prime is 131021433213427. The reversal of 131021433213403 is 304312334120131.

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 131021433213403 - 2⁵ = 131021433213371 is a prime.

It is a super-2 number, since 2×131021433213403² (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 (131021433213103) 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, 1769614150 + ... + 1769688187.

It is an arithmetic number, because the mean of its divisors is an integer number (32756243138190).

Almost surely, 2^{131021433213403} is an apocalyptic number.

131021433213403 is a deficient number, since it is larger than the sum of its proper divisors (3539339357).

131021433213403 is an equidigital number, since it uses as much as digits as its factorization.

131021433213403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539339356.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 131021433213403 its reverse (304312334120131), we get a palindrome (435333767333534).

The spelling of 131021433213403 in words is "one hundred thirty-one trillion, twenty-one billion, four hundred thirty-three million, two hundred thirteen thousand, four hundred three".