31287083349 has 8 divisors (see below), whose sum is σ = 42044584960. Its totient is φ = 20693818656.

The previous prime is 31287083323. The next prime is 31287083353. The reversal of 31287083349 is 94338078213.

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

It is not a de Polignac number, because 31287083349 - 2¹⁹ = 31286559061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31287083298 and 31287083307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31287083369) 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, 41058784 + ... + 41059545.

It is an arithmetic number, because the mean of its divisors is an integer number (5255573120).

Almost surely, 2^31287083349 is an apocalyptic number.

It is an amenable number.

31287083349 is a deficient number, since it is larger than the sum of its proper divisors (10757501611).

31287083349 is a wasteful number, since it uses less digits than its factorization.

31287083349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82118459.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 31287083349 in words is "thirty-one billion, two hundred eighty-seven million, eighty-three thousand, three hundred forty-nine".