31418897 has 6 divisors (see below), whose sum is σ = 32844882. Its totient is φ = 30052352.

The previous prime is 31418867. The next prime is 31418899. The reversal of 31418897 is 79881413.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 8532241 = 4784^2 + 2921^2 .

It is not a de Polignac number, because 31418897 - 2⁸ = 31418641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31418899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29168 + ... + 30225.

It is an arithmetic number, because the mean of its divisors is an integer number (5474147).

Almost surely, 2^31418897 is an apocalyptic number.

It is an amenable number.

31418897 is a deficient number, since it is larger than the sum of its proper divisors (1425985).

31418897 is an equidigital number, since it uses as much as digits as its factorization.

31418897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59439 (or 59416 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 31418897 is about 5605.2561939665. The cubic root of 31418897 is about 315.5467015790.

The spelling of 31418897 in words is "thirty-one million, four hundred eighteen thousand, eight hundred ninety-seven".