102311403 has 4 divisors (see below), whose sum is σ = 136415208. Its totient is φ = 68207600.

The previous prime is 102311353. The next prime is 102311477. The reversal of 102311403 is 304113201.

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

It is a cyclic number.

It is not a de Polignac number, because 102311403 - 2¹² = 102307307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102311003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17051898 + ... + 17051903.

It is an arithmetic number, because the mean of its divisors is an integer number (34103802).

Almost surely, 2^102311403 is an apocalyptic number.

102311403 is a deficient number, since it is larger than the sum of its proper divisors (34103805).

102311403 is an equidigital number, since it uses as much as digits as its factorization.

102311403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34103804.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102311403 is about 10114.9099353380. The cubic root of 102311403 is about 467.7078725158.

Adding to 102311403 its reverse (304113201), we get a palindrome (406424604).

The spelling of 102311403 in words is "one hundred two million, three hundred eleven thousand, four hundred three".