31141397 has 8 divisors (see below), whose sum is σ = 35688576. Its totient is φ = 26618832.

The previous prime is 31141373. The next prime is 31141403. The reversal of 31141397 is 79314113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31141397 - 2⁸ = 31141141 is a prime.

It is a super-3 number, since 3×31141397³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3353 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (4461072).

Almost surely, 2^31141397 is an apocalyptic number.

It is an amenable number.

31141397 is a deficient number, since it is larger than the sum of its proper divisors (4547179).

31141397 is a wasteful number, since it uses less digits than its factorization.

31141397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12307.

The product of its digits is 2268, while the sum is 29.

The square root of 31141397 is about 5580.4477418931. The cubic root of 31141397 is about 314.6149557479.

The spelling of 31141397 in words is "thirty-one million, one hundred forty-one thousand, three hundred ninety-seven".