149270831 has 2 divisors, whose sum is σ = 149270832. Its totient is φ = 149270830.

The previous prime is 149270827. The next prime is 149270833. The reversal of 149270831 is 138072941.

It is a strong prime.

It is an emirp because it is prime and its reverse (138072941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149270831 - 2² = 149270827 is a prime.

It is a super-2 number, since 2×149270831² = 44563561974861122, which contains 22 as substring.

Together with 149270833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149270791 and 149270800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149270833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74635415 + 74635416.

It is an arithmetic number, because the mean of its divisors is an integer number (74635416).

Almost surely, 2^149270831 is an apocalyptic number.

149270831 is a deficient number, since it is larger than the sum of its proper divisors (1).

149270831 is an equidigital number, since it uses as much as digits as its factorization.

149270831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 149270831 is about 12217.6442491996. The cubic root of 149270831 is about 530.4669327596.

The spelling of 149270831 in words is "one hundred forty-nine million, two hundred seventy thousand, eight hundred thirty-one".