31464340 has 12 divisors (see below), whose sum is σ = 66075156. Its totient is φ = 12585728.

The previous prime is 31464281. The next prime is 31464341. The reversal of 31464340 is 4346413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9449476 + 22014864 = 3074^2 + 4692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31464341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786589 + ... + 786628.

It is an arithmetic number, because the mean of its divisors is an integer number (5506263).

Almost surely, 2^31464340 is an apocalyptic number.

It is an amenable number.

31464340 is an abundant number, since it is smaller than the sum of its proper divisors (34610816).

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

31464340 is a wasteful number, since it uses less digits than its factorization.

31464340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573226 (or 1573224 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 31464340 is about 5609.3083352585. The cubic root of 31464340 is about 315.6987595481.

The spelling of 31464340 in words is "thirty-one million, four hundred sixty-four thousand, three hundred forty".