202012302431 has 4 divisors (see below), whose sum is σ = 202021967352. Its totient is φ = 202002637512.

The previous prime is 202012302383. The next prime is 202012302449. The reversal of 202012302431 is 134203210202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134203210202 = 2 ⋅67101605101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202012302431 is a prime.

It is a super-2 number, since 2×202012302431² (a number of 23 digits) 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 (202012302451) 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, 4801040 + ... + 4842933.

It is an arithmetic number, because the mean of its divisors is an integer number (50505491838).

Almost surely, 2^202012302431 is an apocalyptic number.

202012302431 is a deficient number, since it is larger than the sum of its proper divisors (9664921).

202012302431 is an equidigital number, since it uses as much as digits as its factorization.

202012302431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9664920.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 202012302431 its reverse (134203210202), we get a palindrome (336215512633).

The spelling of 202012302431 in words is "two hundred two billion, twelve million, three hundred two thousand, four hundred thirty-one".