149209202231 has 2 divisors, whose sum is σ = 149209202232. Its totient is φ = 149209202230.

The previous prime is 149209202227. The next prime is 149209202239. The reversal of 149209202231 is 132202902941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149209202231 - 2² = 149209202227 is a prime.

It is a super-2 number, since 2×149209202231² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 149209202191 and 149209202200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149209202239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74604601115 + 74604601116.

It is an arithmetic number, because the mean of its divisors is an integer number (74604601116).

Almost surely, 2^149209202231 is an apocalyptic number.

149209202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

149209202231 is an equidigital number, since it uses as much as digits as its factorization.

149209202231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 149209202231 in words is "one hundred forty-nine billion, two hundred nine million, two hundred two thousand, two hundred thirty-one".