31025145340 has 96 divisors (see below), whose sum is σ = 78122999808. Its totient is φ = 10125216000.

The previous prime is 31025145329. The next prime is 31025145373. The reversal of 31025145340 is 4354152013.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 31025145299 and 31025145308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206145 + ... + 323335.

It is an arithmetic number, because the mean of its divisors is an integer number (813781248).

Almost surely, 2^31025145340 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 31025145340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39061499904).

31025145340 is an abundant number, since it is smaller than the sum of its proper divisors (47097854468).

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

31025145340 is a wasteful number, since it uses less digits than its factorization.

31025145340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117299 (or 117297 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 31025145340 its reverse (4354152013), we get a palindrome (35379297353).

The spelling of 31025145340 in words is "thirty-one billion, twenty-five million, one hundred forty-five thousand, three hundred forty".