147561331 has 2 divisors, whose sum is σ = 147561332. Its totient is φ = 147561330.

The previous prime is 147561313. The next prime is 147561383. The reversal of 147561331 is 133165741.

Together with previous prime (147561313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (133165741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147561331 - 2²⁵ = 114006899 is a prime.

It is a super-2 number, since 2×147561331² = 43548692812983122, which contains 22 as substring.

It is equal to p_8314942 and since 147561331 and 8314942 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 147561293 and 147561302.

It is not a weakly prime, because it can be changed into another prime (147561731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73780665 + 73780666.

It is an arithmetic number, because the mean of its divisors is an integer number (73780666).

Almost surely, 2^147561331 is an apocalyptic number.

147561331 is a deficient number, since it is larger than the sum of its proper divisors (1).

147561331 is an equidigital number, since it uses as much as digits as its factorization.

147561331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 147561331 is about 12147.4824963858. The cubic root of 147561331 is about 528.4341238999.

The spelling of 147561331 in words is "one hundred forty-seven million, five hundred sixty-one thousand, three hundred thirty-one".