87031412 has 12 divisors (see below), whose sum is σ = 164020836. Its totient is φ = 40168320.

The previous prime is 87031369. The next prime is 87031423. The reversal of 87031412 is 21413078.

It can be written as a sum of positive squares in 2 ways, for example, as 32330596 + 54700816 = 5686^2 + 7396^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 836789 + ... + 836892.

It is an arithmetic number, because the mean of its divisors is an integer number (13668403).

Almost surely, 2^87031412 is an apocalyptic number.

It is an amenable number.

87031412 is a deficient number, since it is larger than the sum of its proper divisors (76989424).

87031412 is a wasteful number, since it uses less digits than its factorization.

87031412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673698 (or 1673696 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 87031412 is about 9329.0627610709. The cubic root of 87031412 is about 443.1580845140.

The spelling of 87031412 in words is "eighty-seven million, thirty-one thousand, four hundred twelve".