100431262131 has 4 divisors (see below), whose sum is σ = 133908349512. Its totient is φ = 66954174752.

The previous prime is 100431261971. The next prime is 100431262133. The reversal of 100431262131 is 131262134001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131262134001 = 3 ⋅43754044667.

It is a cyclic number.

It is not a de Polignac number, because 100431262131 - 2¹⁰ = 100431261107 is a prime.

It is a super-2 number, since 2×100431262131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100431262133) 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, 16738543686 + ... + 16738543691.

It is an arithmetic number, because the mean of its divisors is an integer number (33477087378).

Almost surely, 2^100431262131 is an apocalyptic number.

100431262131 is a deficient number, since it is larger than the sum of its proper divisors (33477087381).

100431262131 is an equidigital number, since it uses as much as digits as its factorization.

100431262131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33477087380.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 100431262131 its reverse (131262134001), we get a palindrome (231693396132).

The spelling of 100431262131 in words is "one hundred billion, four hundred thirty-one million, two hundred sixty-two thousand, one hundred thirty-one".