31383087340 has 24 divisors (see below), whose sum is σ = 71895800592. Its totient is φ = 11412031680.

The previous prime is 31383087331. The next prime is 31383087343. The reversal of 31383087340 is 4378038313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31383087293 and 31383087302.

It is not an unprimeable number, because it can be changed into a prime (31383087343) 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, 71324979 + ... + 71325418.

It is an arithmetic number, because the mean of its divisors is an integer number (2995658358).

Almost surely, 2^31383087340 is an apocalyptic number.

It is an amenable number.

31383087340 is an abundant number, since it is smaller than the sum of its proper divisors (40512713252).

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

31383087340 is a wasteful number, since it uses less digits than its factorization.

31383087340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142650417 (or 142650415 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 31383087340 in words is "thirty-one billion, three hundred eighty-three million, eighty-seven thousand, three hundred forty".