233157433909 has 2 divisors, whose sum is σ = 233157433910. Its totient is φ = 233157433908.

The previous prime is 233157433903. The next prime is 233157433969. The reversal of 233157433909 is 909334751332.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232777300900 + 380133009 = 482470^2 + 19497^2 .

It is a cyclic number.

It is not a de Polignac number, because 233157433909 - 2²⁹ = 232620562997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233157433903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116578716954 + 116578716955.

It is an arithmetic number, because the mean of its divisors is an integer number (116578716955).

Almost surely, 2^233157433909 is an apocalyptic number.

It is an amenable number.

233157433909 is a deficient number, since it is larger than the sum of its proper divisors (1).

233157433909 is an equidigital number, since it uses as much as digits as its factorization.

233157433909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 49.

The spelling of 233157433909 in words is "two hundred thirty-three billion, one hundred fifty-seven million, four hundred thirty-three thousand, nine hundred nine".