2131002431 has 4 divisors (see below), whose sum is σ = 2131757472. Its totient is φ = 2130247392.

The previous prime is 2131002407. The next prime is 2131002451. The reversal of 2131002431 is 1342001312.

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 2131002431 - 2¹⁴ = 2130986047 is a prime.

It is a super-2 number, since 2×2131002431² = 9082342721855819522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131002451) 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, 373271 + ... + 378936.

It is an arithmetic number, because the mean of its divisors is an integer number (532939368).

Almost surely, 2^2131002431 is an apocalyptic number.

2131002431 is a deficient number, since it is larger than the sum of its proper divisors (755041).

2131002431 is an equidigital number, since it uses as much as digits as its factorization.

2131002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755040.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2131002431 is about 46162.7818810782. The cubic root of 2131002431 is about 1286.8501624777.

Adding to 2131002431 its reverse (1342001312), we get a palindrome (3473003743).

The spelling of 2131002431 in words is "two billion, one hundred thirty-one million, two thousand, four hundred thirty-one".