31472330 has 8 divisors (see below), whose sum is σ = 56650212. Its totient is φ = 12588928.

The previous prime is 31472293. The next prime is 31472339. The reversal of 31472330 is 3327413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31460881 + 11449 = 5609^2 + 107^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 31472296 and 31472305.

It is not an unprimeable number, because it can be changed into a prime (31472339) 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, 1573607 + ... + 1573626.

Almost surely, 2^31472330 is an apocalyptic number.

31472330 is a deficient number, since it is larger than the sum of its proper divisors (25177882).

31472330 is a wasteful number, since it uses less digits than its factorization.

31472330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147240.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 31472330 is about 5610.0204990713. The cubic root of 31472330 is about 315.7254799519.

Adding to 31472330 its reverse (3327413), we get a palindrome (34799743).

The spelling of 31472330 in words is "thirty-one million, four hundred seventy-two thousand, three hundred thirty".