31141898 has 4 divisors (see below), whose sum is σ = 46712850. Its totient is φ = 15570948.

The previous prime is 31141897. The next prime is 31141907. The reversal of 31141898 is 89814113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27008809 + 4133089 = 5197^2 + 2033^2 .

It is a super-2 number, since 2×31141898² = 1939635622084808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31141897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7785473 + ... + 7785476.

Almost surely, 2^31141898 is an apocalyptic number.

31141898 is a deficient number, since it is larger than the sum of its proper divisors (15570952).

31141898 is a wasteful number, since it uses less digits than its factorization.

31141898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570951.

The product of its digits is 6912, while the sum is 35.

The square root of 31141898 is about 5580.4926305838. The cubic root of 31141898 is about 314.6166429046.

The spelling of 31141898 in words is "thirty-one million, one hundred forty-one thousand, eight hundred ninety-eight".