202402021231 has 2 divisors, whose sum is σ = 202402021232. Its totient is φ = 202402021230.

The previous prime is 202402021169. The next prime is 202402021253. The reversal of 202402021231 is 132120204202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202402021231 - 2⁹ = 202402020719 is a prime.

It is a super-2 number, since 2×202402021231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202402021199 and 202402021208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202402021331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101201010615 + 101201010616.

It is an arithmetic number, because the mean of its divisors is an integer number (101201010616).

Almost surely, 2^202402021231 is an apocalyptic number.

202402021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

202402021231 is an equidigital number, since it uses as much as digits as its factorization.

202402021231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 202402021231 its reverse (132120204202), we get a palindrome (334522225433).

The spelling of 202402021231 in words is "two hundred two billion, four hundred two million, twenty-one thousand, two hundred thirty-one".