31151341345540 has 24 divisors (see below), whose sum is σ = 70449956582040. Its totient is φ = 11502033727488.

The previous prime is 31151341345513. The next prime is 31151341345561. The reversal of 31151341345540 is 4554314315113.

It can be written as a sum of positive squares in 4 ways, for example, as 298937749504 + 30852403596036 = 546752^2 + 5554494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31151341345493 and 31151341345502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59906425405 + ... + 59906425924.

It is an arithmetic number, because the mean of its divisors is an integer number (2935414857585).

Almost surely, 2^{31151341345540} is an apocalyptic number.

It is an amenable number.

31151341345540 is an abundant number, since it is smaller than the sum of its proper divisors (39298615236500).

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

31151341345540 is a wasteful number, since it uses less digits than its factorization.

31151341345540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119812851351 (or 119812851349 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 31151341345540 in words is "thirty-one trillion, one hundred fifty-one billion, three hundred forty-one million, three hundred forty-five thousand, five hundred forty".