202031400997 has 2 divisors, whose sum is σ = 202031400998. Its totient is φ = 202031400996.

The previous prime is 202031400971. The next prime is 202031401021. The reversal of 202031400997 is 799004130202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157493097316 + 44538303681 = 396854^2 + 211041^2 .

It is a cyclic number.

It is not a de Polignac number, because 202031400997 - 2¹¹ = 202031398949 is a prime.

It is a super-2 number, since 2×202031400997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202031400097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101015700498 + 101015700499.

It is an arithmetic number, because the mean of its divisors is an integer number (101015700499).

Almost surely, 2^202031400997 is an apocalyptic number.

It is an amenable number.

202031400997 is a deficient number, since it is larger than the sum of its proper divisors (1).

202031400997 is an equidigital number, since it uses as much as digits as its factorization.

202031400997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 202031400997 in words is "two hundred two billion, thirty-one million, four hundred thousand, nine hundred ninety-seven".