31489086287 has 8 divisors (see below), whose sum is σ = 32506920960. Its totient is φ = 30471380280.

The previous prime is 31489086263. The next prime is 31489086311. The reversal of 31489086287 is 78268098413.

It is an interprime number because it is at equal distance from previous prime (31489086263) and next prime (31489086311).

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 31489086287 - 2¹⁴ = 31489069903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31489086487) 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, 847298 + ... + 883680.

It is an arithmetic number, because the mean of its divisors is an integer number (4063365120).

Almost surely, 2^31489086287 is an apocalyptic number.

31489086287 is a deficient number, since it is larger than the sum of its proper divisors (1017834673).

31489086287 is a wasteful number, since it uses less digits than its factorization.

31489086287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64333.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 31489086287 in words is "thirty-one billion, four hundred eighty-nine million, eighty-six thousand, two hundred eighty-seven".