31467897 has 6 divisors (see below), whose sum is σ = 45453642. Its totient is φ = 20978592.

The previous prime is 31467893. The next prime is 31467899. The reversal of 31467897 is 79876413.

It can be written as a sum of positive squares in only one way, i.e., 19105641 + 12362256 = 4371^2 + 3516^2 .

It is not a de Polignac number, because 31467897 - 2² = 31467893 is a prime.

It is a super-3 number, since 3×31467897³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31467893) 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, 1748208 + ... + 1748225.

It is an arithmetic number, because the mean of its divisors is an integer number (7575607).

Almost surely, 2^31467897 is an apocalyptic number.

It is an amenable number.

31467897 is a deficient number, since it is larger than the sum of its proper divisors (13985745).

31467897 is a wasteful number, since it uses less digits than its factorization.

31467897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496439 (or 3496436 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 31467897 is about 5609.6253885621. The cubic root of 31467897 is about 315.7106555355.

The spelling of 31467897 in words is "thirty-one million, four hundred sixty-seven thousand, eight hundred ninety-seven".