102031013 has 16 divisors (see below), whose sum is σ = 125607936. Its totient is φ = 80950320.

The previous prime is 102030953. The next prime is 102031037. The reversal of 102031013 is 310130201.

It is a cyclic number.

It is not a de Polignac number, because 102031013 - 2¹⁶ = 101965477 is a prime.

It is a super-2 number, since 2×102031013² = 20820655227612338, 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 = 102030985 and 102031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102031043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5231 + ... + 15212.

It is an arithmetic number, because the mean of its divisors is an integer number (7850496).

Almost surely, 2^102031013 is an apocalyptic number.

It is an amenable number.

102031013 is a deficient number, since it is larger than the sum of its proper divisors (23576923).

102031013 is a wasteful number, since it uses less digits than its factorization.

102031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20504.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 102031013 is about 10101.0401939602. The cubic root of 102031013 is about 467.2802219360.

Adding to 102031013 its reverse (310130201), we get a palindrome (412161214).

The spelling of 102031013 in words is "one hundred two million, thirty-one thousand, thirteen".