31260672 has 102 divisors (see below), whose sum is σ = 92011842. Its totient is φ = 10223616.

The previous prime is 31260653. The next prime is 31260707. The reversal of 31260672 is 27606213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28901376 + 2359296 = 5376^2 + 1536^2 .

It is a super-2 number, since 2×31260672² = 1954459227783168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589798 + ... + 589850.

Almost surely, 2^31260672 is an apocalyptic number.

31260672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31260672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46005921).

31260672 is an abundant number, since it is smaller than the sum of its proper divisors (60751170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31260672 is an frugal number, since it uses more digits than its factorization.

31260672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 31260672 is about 5591.1243949674. The cubic root of 31260672 is about 315.0161140661.

Adding to 31260672 its reverse (27606213), we get a palindrome (58866885).

The spelling of 31260672 in words is "thirty-one million, two hundred sixty thousand, six hundred seventy-two".