151333381 has 2 divisors, whose sum is σ = 151333382. Its totient is φ = 151333380.

The previous prime is 151333379. The next prime is 151333387. The reversal of 151333381 is 183333151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109537156 + 41796225 = 10466^2 + 6465^2 .

It is a cyclic number.

It is not a de Polignac number, because 151333381 - 2¹ = 151333379 is a prime.

It is a super-2 number, since 2×151333381² = 45803584409782322, which contains 22 as substring.

Together with 151333379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151333387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75666690 + 75666691.

It is an arithmetic number, because the mean of its divisors is an integer number (75666691).

Almost surely, 2^151333381 is an apocalyptic number.

It is an amenable number.

151333381 is a deficient number, since it is larger than the sum of its proper divisors (1).

151333381 is an equidigital number, since it uses as much as digits as its factorization.

151333381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 151333381 is about 12301.7633288891. The cubic root of 151333381 is about 532.8990078135.

The spelling of 151333381 in words is "one hundred fifty-one million, three hundred thirty-three thousand, three hundred eighty-one".