81235202 has 16 divisors (see below), whose sum is σ = 125469312. Its totient is φ = 39417840.

The previous prime is 81235199. The next prime is 81235207. The reversal of 81235202 is 20253218.

It is not an unprimeable number, because it can be changed into a prime (81235207) 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, 33077 + ... + 35447.

It is an arithmetic number, because the mean of its divisors is an integer number (7841832).

Almost surely, 2^81235202 is an apocalyptic number.

81235202 is a deficient number, since it is larger than the sum of its proper divisors (44234110).

81235202 is a wasteful number, since it uses less digits than its factorization.

81235202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 81235202 is about 9013.0573059312. The cubic root of 81235202 is about 433.0932564970.

The spelling of 81235202 in words is "eighty-one million, two hundred thirty-five thousand, two hundred two".