31474 has 4 divisors (see below), whose sum is σ = 47214. Its totient is φ = 15736.

The previous prime is 31469. The next prime is 31477. The reversal of 31474 is 47413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47413 = 17 ⋅2789.

It can be written as a sum of positive squares in only one way, i.e., 20449 + 11025 = 143^2 + 105^2 .

It is a super-2 number, since 2×31474² = 1981225352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7867 + ... + 7870.

2³¹⁴⁷⁴ is an apocalyptic number.

31474 is a deficient number, since it is larger than the sum of its proper divisors (15740).

31474 is a wasteful number, since it uses less digits than its factorization.

31474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15739.

The product of its digits is 336, while the sum is 19.

The square root of 31474 is about 177.4091316703. The cubic root of 31474 is about 31.5731064246.

Adding to 31474 its reverse (47413), we get a palindrome (78887).

It can be divided in two parts, 31 and 474, that added together give a palindrome (505).

The spelling of 31474 in words is "thirty-one thousand, four hundred seventy-four".