102431011 has 4 divisors (see below), whose sum is σ = 102493000. Its totient is φ = 102369024.

The previous prime is 102431009. The next prime is 102431023. The reversal of 102431011 is 110134201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110134201 = 5399 ⋅20399.

It is a cyclic number.

It is not a de Polignac number, because 102431011 - 2¹ = 102431009 is a prime.

It is a super-2 number, since 2×102431011² = 20984224028964242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102430982 and 102431000.

It is not an unprimeable number, because it can be changed into a prime (102431111) 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, 28446 + ... + 31843.

It is an arithmetic number, because the mean of its divisors is an integer number (25623250).

Almost surely, 2^102431011 is an apocalyptic number.

102431011 is a deficient number, since it is larger than the sum of its proper divisors (61989).

102431011 is an equidigital number, since it uses as much as digits as its factorization.

102431011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61988.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102431011 is about 10120.8206683055. The cubic root of 102431011 is about 467.8900608026.

Adding to 102431011 its reverse (110134201), we get a palindrome (212565212).

The spelling of 102431011 in words is "one hundred two million, four hundred thirty-one thousand, eleven".