749931331 has 2 divisors, whose sum is σ = 749931332. Its totient is φ = 749931330.

The previous prime is 749931313. The next prime is 749931367. The reversal of 749931331 is 133139947.

Together with previous prime (749931313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749931331 is a prime.

It is a super-2 number, since 2×749931331² = 1124794002430863122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (749931431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374965665 + 374965666.

It is an arithmetic number, because the mean of its divisors is an integer number (374965666).

Almost surely, 2^749931331 is an apocalyptic number.

749931331 is a deficient number, since it is larger than the sum of its proper divisors (1).

749931331 is an equidigital number, since it uses as much as digits as its factorization.

749931331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 40.

The square root of 749931331 is about 27384.8741278831. The cubic root of 749931331 is about 908.5325667133.

The spelling of 749931331 in words is "seven hundred forty-nine million, nine hundred thirty-one thousand, three hundred thirty-one".