31471234 has 4 divisors (see below), whose sum is σ = 47206854. Its totient is φ = 15735616.

The previous prime is 31471217. The next prime is 31471289. The reversal of 31471234 is 43217413.

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., 27531009 + 3940225 = 5247^2 + 1985^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31471199 and 31471208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7867807 + ... + 7867810.

Almost surely, 2^31471234 is an apocalyptic number.

31471234 is a deficient number, since it is larger than the sum of its proper divisors (15735620).

31471234 is a wasteful number, since it uses less digits than its factorization.

31471234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15735619.

The product of its digits is 2016, while the sum is 25.

The square root of 31471234 is about 5609.9228158683. The cubic root of 31471234 is about 315.7218149426.

Adding to 31471234 its reverse (43217413), we get a palindrome (74688647).

The spelling of 31471234 in words is "thirty-one million, four hundred seventy-one thousand, two hundred thirty-four".