31380981100489 has 8 divisors (see below), whose sum is σ = 32538532124672. Its totient is φ = 30232508908320.

The previous prime is 31380981100453. The next prime is 31380981100517. The reversal of 31380981100489 is 98400118908313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31380981100489 - 2¹⁵ = 31380981067721 is a prime.

It is a super-3 number, since 3×31380981100489³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31380981100409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269700964 + ... + 2269714789.

It is an arithmetic number, because the mean of its divisors is an integer number (4067316515584).

Almost surely, 2^{31380981100489} is an apocalyptic number.

It is an amenable number.

31380981100489 is a deficient number, since it is larger than the sum of its proper divisors (1157551024183).

31380981100489 is a wasteful number, since it uses less digits than its factorization.

31380981100489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539416007.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 31380981100489 in words is "thirty-one trillion, three hundred eighty billion, nine hundred eighty-one million, one hundred thousand, four hundred eighty-nine".