897314731 has 2 divisors, whose sum is σ = 897314732. Its totient is φ = 897314730.

The previous prime is 897314701. The next prime is 897314749. The reversal of 897314731 is 137413798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897314731 - 2⁹ = 897314219 is a prime.

It is a super-2 number, since 2×897314731² = 1610347452939204722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897314701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448657365 + 448657366.

It is an arithmetic number, because the mean of its divisors is an integer number (448657366).

Almost surely, 2^897314731 is an apocalyptic number.

897314731 is a deficient number, since it is larger than the sum of its proper divisors (1).

897314731 is an equidigital number, since it uses as much as digits as its factorization.

897314731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 897314731 is about 29955.2120840431. The cubic root of 897314731 is about 964.5282062906.

The spelling of 897314731 in words is "eight hundred ninety-seven million, three hundred fourteen thousand, seven hundred thirty-one".