31434512 has 40 divisors (see below), whose sum is σ = 65352960. Its totient is φ = 14601600.

The previous prime is 31434511. The next prime is 31434517. The reversal of 31434512 is 21543413.

It is not an unprimeable number, because it can be changed into a prime (31434511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15137 + ... + 17087.

It is an arithmetic number, because the mean of its divisors is an integer number (1633824).

Almost surely, 2^31434512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31434512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32676480).

31434512 is an abundant number, since it is smaller than the sum of its proper divisors (33918448).

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

31434512 is a wasteful number, since it uses less digits than its factorization.

31434512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031 (or 2025 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 31434512 is about 5606.6489099996. The cubic root of 31434512 is about 315.5989678494.

Adding to 31434512 its reverse (21543413), we get a palindrome (52977925).

The spelling of 31434512 in words is "thirty-one million, four hundred thirty-four thousand, five hundred twelve".