98671931 has 2 divisors, whose sum is σ = 98671932. Its totient is φ = 98671930.

The previous prime is 98671919. The next prime is 98671957. The reversal of 98671931 is 13917689.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98671931 is a prime.

It is a super-2 number, since 2×98671931² = 19472299934537522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (98671901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49335965 + 49335966.

It is an arithmetic number, because the mean of its divisors is an integer number (49335966).

Almost surely, 2^98671931 is an apocalyptic number.

98671931 is a deficient number, since it is larger than the sum of its proper divisors (1).

98671931 is an equidigital number, since it uses as much as digits as its factorization.

98671931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 98671931 is about 9933.3746028225. The cubic root of 98671931 is about 462.0949359197.

The spelling of 98671931 in words is "ninety-eight million, six hundred seventy-one thousand, nine hundred thirty-one".