83431490 has 16 divisors (see below), whose sum is σ = 150752448. Its totient is φ = 33244656.

The previous prime is 83431483. The next prime is 83431531. The reversal of 83431490 is 9413438.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13232 + ... + 18491.

It is an arithmetic number, because the mean of its divisors is an integer number (9422028).

Almost surely, 2^83431490 is an apocalyptic number.

83431490 is a deficient number, since it is larger than the sum of its proper divisors (67320958).

83431490 is a wasteful number, since it uses less digits than its factorization.

83431490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31993.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 83431490 is about 9134.0839715869. The cubic root of 83431490 is about 436.9616605714.

The spelling of 83431490 in words is "eighty-three million, four hundred thirty-one thousand, four hundred ninety".