149297431 has 2 divisors, whose sum is σ = 149297432. Its totient is φ = 149297430.

The previous prime is 149297429. The next prime is 149297471. The reversal of 149297431 is 134792941.

It is an a-pointer prime, because the next prime (149297471) can be obtained adding 149297431 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149297431 - 2¹ = 149297429 is a prime.

It is a super-2 number, since 2×149297431² = 44579445806399522, which contains 22 as substring.

Together with 149297429, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149297471) 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, 74648715 + 74648716.

It is an arithmetic number, because the mean of its divisors is an integer number (74648716).

Almost surely, 2^149297431 is an apocalyptic number.

149297431 is a deficient number, since it is larger than the sum of its proper divisors (1).

149297431 is an equidigital number, since it uses as much as digits as its factorization.

149297431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 149297431 is about 12218.7327902692. The cubic root of 149297431 is about 530.4984405504.

The spelling of 149297431 in words is "one hundred forty-nine million, two hundred ninety-seven thousand, four hundred thirty-one".