147397631 has 2 divisors, whose sum is σ = 147397632. Its totient is φ = 147397630.

The previous prime is 147397589. The next prime is 147397643. The reversal of 147397631 is 136793741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147397631 - 2²² = 143203327 is a prime.

It is a super-2 number, since 2×147397631² = 43452123248824322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147397681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73698815 + 73698816.

It is an arithmetic number, because the mean of its divisors is an integer number (73698816).

Almost surely, 2^147397631 is an apocalyptic number.

147397631 is a deficient number, since it is larger than the sum of its proper divisors (1).

147397631 is an equidigital number, since it uses as much as digits as its factorization.

147397631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 147397631 is about 12140.7426049645. The cubic root of 147397631 is about 528.2386420760.

The spelling of 147397631 in words is "one hundred forty-seven million, three hundred ninety-seven thousand, six hundred thirty-one".