231002099291 has 2 divisors, whose sum is σ = 231002099292. Its totient is φ = 231002099290.

The previous prime is 231002099267. The next prime is 231002099329. The reversal of 231002099291 is 192990200132.

It is an a-pointer prime, because the next prime (231002099329) can be obtained adding 231002099291 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231002099291 - 2⁶ = 231002099227 is a prime.

It is not a weakly prime, because it can be changed into another prime (231002099791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115501049645 + 115501049646.

It is an arithmetic number, because the mean of its divisors is an integer number (115501049646).

Almost surely, 2^231002099291 is an apocalyptic number.

231002099291 is a deficient number, since it is larger than the sum of its proper divisors (1).

231002099291 is an equidigital number, since it uses as much as digits as its factorization.

231002099291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 231002099291 in words is "two hundred thirty-one billion, two million, ninety-nine thousand, two hundred ninety-one".