200031153661 has 2 divisors, whose sum is σ = 200031153662. Its totient is φ = 200031153660.

The previous prime is 200031153653. The next prime is 200031153737. The reversal of 200031153661 is 166351130002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122563008100 + 77468145561 = 350090^2 + 278331^2 .

It is a cyclic number.

It is not a de Polignac number, because 200031153661 - 2³ = 200031153653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200031153631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100015576830 + 100015576831.

It is an arithmetic number, because the mean of its divisors is an integer number (100015576831).

Almost surely, 2^200031153661 is an apocalyptic number.

It is an amenable number.

200031153661 is a deficient number, since it is larger than the sum of its proper divisors (1).

200031153661 is an equidigital number, since it uses as much as digits as its factorization.

200031153661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 200031153661 its reverse (166351130002), we get a palindrome (366382283663).

The spelling of 200031153661 in words is "two hundred billion, thirty-one million, one hundred fifty-three thousand, six hundred sixty-one".