1531673012 has 12 divisors (see below), whose sum is σ = 2688993636. Its totient is φ = 763389120.

The previous prime is 1531673009. The next prime is 1531673137. The reversal of 1531673012 is 2103761351.

It can be written as a sum of positive squares in 2 ways, for example, as 425844496 + 1105828516 = 20636^2 + 33254^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610439 + ... + 612942.

It is an arithmetic number, because the mean of its divisors is an integer number (224082803).

Almost surely, 2^1531673012 is an apocalyptic number.

It is an amenable number.

1531673012 is a deficient number, since it is larger than the sum of its proper divisors (1157320624).

1531673012 is a wasteful number, since it uses less digits than its factorization.

1531673012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223698 (or 1223696 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1531673012 is about 39136.5942820783. The cubic root of 1531673012 is about 1152.7152003787.

The spelling of 1531673012 in words is "one billion, five hundred thirty-one million, six hundred seventy-three thousand, twelve".