102831473 has 4 divisors (see below), whose sum is σ = 105610740. Its totient is φ = 100052208.

The previous prime is 102831467. The next prime is 102831479. The reversal of 102831473 is 374138201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (102831467) and next prime (102831479).

It can be written as a sum of positive squares in 2 ways, for example, as 83046769 + 19784704 = 9113^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 102831473 - 2⁶ = 102831409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102831479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389578 + ... + 1389651.

It is an arithmetic number, because the mean of its divisors is an integer number (26402685).

Almost surely, 2^102831473 is an apocalyptic number.

It is an amenable number.

102831473 is a deficient number, since it is larger than the sum of its proper divisors (2779267).

102831473 is an equidigital number, since it uses as much as digits as its factorization.

102831473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779266.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 102831473 is about 10140.5854367487. The cubic root of 102831473 is about 468.4990187560.

Adding to 102831473 its reverse (374138201), we get a palindrome (476969674).

The spelling of 102831473 in words is "one hundred two million, eight hundred thirty-one thousand, four hundred seventy-three".