102031011 has 12 divisors (see below), whose sum is σ = 147913792. Its totient is φ = 67773456.

The previous prime is 102030953. The next prime is 102031037. The reversal of 102031011 is 110130201.

It is not a de Polignac number, because 102031011 - 2⁶ = 102030947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102030984 and 102031002.

It is not an unprimeable number, because it can be changed into a prime (102031051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17971 + ... + 22956.

Almost surely, 2^102031011 is an apocalyptic number.

102031011 is a deficient number, since it is larger than the sum of its proper divisors (45882781).

102031011 is a wasteful number, since it uses less digits than its factorization.

102031011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41210 (or 41207 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 102031011 is about 10101.0400949605. The cubic root of 102031011 is about 467.2802188828.

Adding to 102031011 its reverse (110130201), we get a palindrome (212161212).

The spelling of 102031011 in words is "one hundred two million, thirty-one thousand, eleven".