31025165340 has 144 divisors (see below), whose sum is σ = 95663030400. Its totient is φ = 7507378944.

The previous prime is 31025165317. The next prime is 31025165383. The reversal of 31025165340 is 4356152013.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31025165298 and 31025165307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 572331 + ... + 624189.

It is an arithmetic number, because the mean of its divisors is an integer number (664326600).

Almost surely, 2^31025165340 is an apocalyptic number.

31025165340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31025165340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47831515200).

31025165340 is an abundant number, since it is smaller than the sum of its proper divisors (64637865060).

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

31025165340 is a wasteful number, since it uses less digits than its factorization.

31025165340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51956 (or 51941 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 31025165340 in words is "thirty-one billion, twenty-five million, one hundred sixty-five thousand, three hundred forty".