102431272 has 8 divisors (see below), whose sum is σ = 192058650. Its totient is φ = 51215632.

The previous prime is 102431269. The next prime is 102431291. The reversal of 102431272 is 272134201.

It can be written as a sum of positive squares in only one way, i.e., 71673156 + 30758116 = 8466^2 + 5546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6401947 + ... + 6401962.

Almost surely, 2^102431272 is an apocalyptic number.

It is an amenable number.

102431272 is a deficient number, since it is larger than the sum of its proper divisors (89627378).

102431272 is a wasteful number, since it uses less digits than its factorization.

102431272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803915 (or 12803911 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 102431272 is about 10120.8335625086. The cubic root of 102431272 is about 467.8904582057.

Adding to 102431272 its reverse (272134201), we get a palindrome (374565473).

The spelling of 102431272 in words is "one hundred two million, four hundred thirty-one thousand, two hundred seventy-two".