31355034161440 has 48 divisors (see below), whose sum is σ = 80810474411520. Its totient is φ = 11401830603520.

The previous prime is 31355034161431. The next prime is 31355034161449. The reversal of 31355034161440 is 4416143055313.

It is an interprime number because it is at equal distance from previous prime (31355034161431) and next prime (31355034161449).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 31355034161393 and 31355034161402.

It is not an unprimeable number, because it can be changed into a prime (31355034161449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8907678400 + ... + 8907681919.

It is an arithmetic number, because the mean of its divisors is an integer number (1683551550240).

Almost surely, 2^{31355034161440} is an apocalyptic number.

It is an amenable number.

31355034161440 is an abundant number, since it is smaller than the sum of its proper divisors (49455440250080).

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

31355034161440 is a wasteful number, since it uses less digits than its factorization.

31355034161440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17815360345 (or 17815360337 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 31355034161440 in words is "thirty-one trillion, three hundred fifty-five billion, thirty-four million, one hundred sixty-one thousand, four hundred forty".