31514228 has 12 divisors (see below), whose sum is σ = 56929152. Its totient is φ = 15248760.

The previous prime is 31514221. The next prime is 31514239. The reversal of 31514228 is 82241513.

It is a junction number, because it is equal to n+sod(n) for n = 31514197 and 31514206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31514221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126950 + ... + 127197.

It is an arithmetic number, because the mean of its divisors is an integer number (4744096).

Almost surely, 2^31514228 is an apocalyptic number.

It is an amenable number.

31514228 is a deficient number, since it is larger than the sum of its proper divisors (25414924).

31514228 is a wasteful number, since it uses less digits than its factorization.

31514228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254182 (or 254180 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 31514228 is about 5613.7534680461. The cubic root of 31514228 is about 315.8655225479.

The spelling of 31514228 in words is "thirty-one million, five hundred fourteen thousand, two hundred twenty-eight".