931591601 has 2 divisors, whose sum is σ = 931591602. Its totient is φ = 931591600.

The previous prime is 931591543. The next prime is 931591607. The reversal of 931591601 is 106195139.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612612001 + 318979600 = 24751^2 + 17860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-931591601 is a prime.

It is a super-2 number, since 2×931591601² = 1735725822107486402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (931591607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465795800 + 465795801.

It is an arithmetic number, because the mean of its divisors is an integer number (465795801).

Almost surely, 2^931591601 is an apocalyptic number.

It is an amenable number.

931591601 is a deficient number, since it is larger than the sum of its proper divisors (1).

931591601 is an equidigital number, since it uses as much as digits as its factorization.

931591601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 931591601 is about 30521.9855350205. The cubic root of 931591601 is about 976.6565224840.

The spelling of 931591601 in words is "nine hundred thirty-one million, five hundred ninety-one thousand, six hundred one".