31388948147 has 8 divisors (see below), whose sum is σ = 31478398944. Its totient is φ = 31299625728.

The previous prime is 31388948137. The next prime is 31388948161. The reversal of 31388948147 is 74184988313.

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 31388948147 - 2¹⁶ = 31388882611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31388948092 and 31388948101.

It is not an unprimeable number, because it can be changed into a prime (31388948137) 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, 468653 + ... + 531425.

It is an arithmetic number, because the mean of its divisors is an integer number (3934799868).

Almost surely, 2^31388948147 is an apocalyptic number.

31388948147 is a deficient number, since it is larger than the sum of its proper divisors (89450797).

31388948147 is an equidigital number, since it uses as much as digits as its factorization.

31388948147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64189.

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

The spelling of 31388948147 in words is "thirty-one billion, three hundred eighty-eight million, nine hundred forty-eight thousand, one hundred forty-seven".