102431537 has 8 divisors (see below), whose sum is σ = 110400360. Its totient is φ = 94475520.

The previous prime is 102431531. The next prime is 102431557. The reversal of 102431537 is 735134201.

It can be written as a sum of positive squares in 4 ways, for example, as 5527201 + 96904336 = 2351^2 + 9844^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102431537 - 2¹⁶ = 102366001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102431531) 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, 19337 + ... + 24057.

It is an arithmetic number, because the mean of its divisors is an integer number (13800045).

Almost surely, 2^102431537 is an apocalyptic number.

It is an amenable number.

102431537 is a deficient number, since it is larger than the sum of its proper divisors (7968823).

102431537 is a wasteful number, since it uses less digits than its factorization.

102431537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 102431537 is about 10120.8466543071. The cubic root of 102431537 is about 467.8908616986.

Adding to 102431537 its reverse (735134201), we get a palindrome (837565738).

The spelling of 102431537 in words is "one hundred two million, four hundred thirty-one thousand, five hundred thirty-seven".