31019520427 has 8 divisors (see below), whose sum is σ = 35452078592. Its totient is φ = 26587261800.

The previous prime is 31019520419. The next prime is 31019520451. The reversal of 31019520427 is 72402591013.

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 31019520427 - 2³ = 31019520419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31019520392 and 31019520401.

It is not an unprimeable number, because it can be changed into a prime (31019520227) 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, 229552 + ... + 338722.

It is an arithmetic number, because the mean of its divisors is an integer number (4431509824).

Almost surely, 2^31019520427 is an apocalyptic number.

31019520427 is a deficient number, since it is larger than the sum of its proper divisors (4432558165).

31019520427 is a wasteful number, since it uses less digits than its factorization.

31019520427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149769.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 31019520427 in words is "thirty-one billion, nineteen million, five hundred twenty thousand, four hundred twenty-seven".