147331297 has 2 divisors, whose sum is σ = 147331298. Its totient is φ = 147331296.

The previous prime is 147331213. The next prime is 147331351. The reversal of 147331297 is 792133741.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146313216 + 1018081 = 12096^2 + 1009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147331297 is a prime.

It is a super-2 number, since 2×147331297² = 43413022151404418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147331697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73665648 + 73665649.

It is an arithmetic number, because the mean of its divisors is an integer number (73665649).

Almost surely, 2^147331297 is an apocalyptic number.

It is an amenable number.

147331297 is a deficient number, since it is larger than the sum of its proper divisors (1).

147331297 is an equidigital number, since it uses as much as digits as its factorization.

147331297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 37.

The square root of 147331297 is about 12138.0104218113. The cubic root of 147331297 is about 528.1593883377.

The spelling of 147331297 in words is "one hundred forty-seven million, three hundred thirty-one thousand, two hundred ninety-seven".