161314331 has 2 divisors, whose sum is σ = 161314332. Its totient is φ = 161314330.

The previous prime is 161314301. The next prime is 161314337. The reversal of 161314331 is 133413161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161314331 - 2¹⁴ = 161297947 is a prime.

It is a super-2 number, since 2×161314331² = 52044626771955122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 161314297 and 161314306.

It is not a weakly prime, because it can be changed into another prime (161314337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80657165 + 80657166.

It is an arithmetic number, because the mean of its divisors is an integer number (80657166).

Almost surely, 2^161314331 is an apocalyptic number.

161314331 is a deficient number, since it is larger than the sum of its proper divisors (1).

161314331 is an equidigital number, since it uses as much as digits as its factorization.

161314331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 161314331 is about 12700.9578772626. The cubic root of 161314331 is about 544.3659894340.

Adding to 161314331 its reverse (133413161), we get a palindrome (294727492).

The spelling of 161314331 in words is "one hundred sixty-one million, three hundred fourteen thousand, three hundred thirty-one".