202019431 has 2 divisors, whose sum is σ = 202019432. Its totient is φ = 202019430.

The previous prime is 202019413. The next prime is 202019437. The reversal of 202019431 is 134910202.

Together with previous prime (202019413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202019431 - 2⁷ = 202019303 is a prime.

It is a super-2 number, since 2×202019431² = 81623701003127522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202019437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101009715 + 101009716.

It is an arithmetic number, because the mean of its divisors is an integer number (101009716).

Almost surely, 2^202019431 is an apocalyptic number.

202019431 is a deficient number, since it is larger than the sum of its proper divisors (1).

202019431 is an equidigital number, since it uses as much as digits as its factorization.

202019431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 202019431 is about 14213.3539673083. The cubic root of 202019431 is about 586.7652438877.

Adding to 202019431 its reverse (134910202), we get a palindrome (336929633).

The spelling of 202019431 in words is "two hundred two million, nineteen thousand, four hundred thirty-one".