1531412085 has 32 divisors (see below), whose sum is σ = 2806382592. Its totient is φ = 698552640.

The previous prime is 1531412063. The next prime is 1531412093. The reversal of 1531412085 is 5802141351.

It is not a de Polignac number, because 1531412085 - 2⁶ = 1531412021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33420 + ... + 64650.

It is an arithmetic number, because the mean of its divisors is an integer number (87699456).

Almost surely, 2^1531412085 is an apocalyptic number.

1531412085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1531412085 is a deficient number, since it is larger than the sum of its proper divisors (1274970507).

1531412085 is a wasteful number, since it uses less digits than its factorization.

1531412085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31713.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1531412085 is about 39133.2605976042. The cubic root of 1531412085 is about 1152.6497400187.

The spelling of 1531412085 in words is "one billion, five hundred thirty-one million, four hundred twelve thousand, eighty-five".