31540014 has 24 divisors (see below), whose sum is σ = 74549592. Its totient is φ = 9557520.

The previous prime is 31540013. The next prime is 31540031. The reversal of 31540014 is 41004513.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31540013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79449 + ... + 79844.

It is an arithmetic number, because the mean of its divisors is an integer number (3106233).

Almost surely, 2^31540014 is an apocalyptic number.

31540014 is an abundant number, since it is smaller than the sum of its proper divisors (43009578).

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

31540014 is a wasteful number, since it uses less digits than its factorization.

31540014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159312 (or 159309 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 31540014 is about 5616.0496792674. The cubic root of 31540014 is about 315.9516496552.

Adding to 31540014 its reverse (41004513), we get a palindrome (72544527).

It can be divided in two parts, 31 and 540014, that added together give a palindrome (540045).

The spelling of 31540014 in words is "thirty-one million, five hundred forty thousand, fourteen".