331671629 has 2 divisors, whose sum is σ = 331671630. Its totient is φ = 331671628.

The previous prime is 331671553. The next prime is 331671647. The reversal of 331671629 is 926176133.

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., 213949129 + 117722500 = 14627^2 + 10850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331671629 is a prime.

It is a super-2 number, since 2×331671629² = 220012138967027282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331671592 and 331671601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331671679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165835814 + 165835815.

It is an arithmetic number, because the mean of its divisors is an integer number (165835815).

Almost surely, 2^331671629 is an apocalyptic number.

It is an amenable number.

331671629 is a deficient number, since it is larger than the sum of its proper divisors (1).

331671629 is an equidigital number, since it uses as much as digits as its factorization.

331671629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 331671629 is about 18211.8540791431. The cubic root of 331671629 is about 692.2071930448.

The spelling of 331671629 in words is "three hundred thirty-one million, six hundred seventy-one thousand, six hundred twenty-nine".