31740102 has 24 divisors (see below), whose sum is σ = 69123600. Its totient is φ = 10525680.

The previous prime is 31740091. The next prime is 31740103. The reversal of 31740102 is 20104713.

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 (31740103) 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 11 ways as a sum of consecutive naturals, for example, 849 + ... + 8012.

It is an arithmetic number, because the mean of its divisors is an integer number (2880150).

Almost surely, 2^31740102 is an apocalyptic number.

31740102 is an abundant number, since it is smaller than the sum of its proper divisors (37383498).

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

31740102 is a wasteful number, since it uses less digits than its factorization.

31740102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068 (or 9065 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31740102 is about 5633.8354608561. The cubic root of 31740102 is about 316.6183680108.

Adding to 31740102 its reverse (20104713), we get a palindrome (51844815).

The spelling of 31740102 in words is "thirty-one million, seven hundred forty thousand, one hundred two".