102731044 has 18 divisors (see below), whose sum is σ = 194673570. Its totient is φ = 47414016.

The previous prime is 102731029. The next prime is 102731053. The reversal of 102731044 is 440137201.

It can be written as a sum of positive squares in 3 ways, for example, as 2930944 + 99800100 = 1712^2 + 9990^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 75309 + ... + 76660.

Almost surely, 2^102731044 is an apocalyptic number.

It is an amenable number.

102731044 is a deficient number, since it is larger than the sum of its proper divisors (91942526).

102731044 is a wasteful number, since it uses less digits than its factorization.

102731044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151999 (or 151984 counting only the distinct ones).

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

The square root of 102731044 is about 10135.6323927025. The cubic root of 102731044 is about 468.3464512845.

Adding to 102731044 its reverse (440137201), we get a palindrome (542868245).

The spelling of 102731044 in words is "one hundred two million, seven hundred thirty-one thousand, forty-four".