31425102 has 12 divisors (see below), whose sum is σ = 68087760. Its totient is φ = 10475028.

The previous prime is 31425101. The next prime is 31425127. The reversal of 31425102 is 20152413.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1745839 = 31425102 / (3 + 1 + 4 + 2 + 5 + 1 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 872902 + ... + 872937.

It is an arithmetic number, because the mean of its divisors is an integer number (5673980).

Almost surely, 2^31425102 is an apocalyptic number.

31425102 is an abundant number, since it is smaller than the sum of its proper divisors (36662658).

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

31425102 is a wasteful number, since it uses less digits than its factorization.

31425102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745847 (or 1745844 counting only the distinct ones).

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

The square root of 31425102 is about 5605.8096649815. The cubic root of 31425102 is about 315.5674729256.

Adding to 31425102 its reverse (20152413), we get a palindrome (51577515).

The spelling of 31425102 in words is "thirty-one million, four hundred twenty-five thousand, one hundred two".