102013223131 has 4 divisors (see below), whose sum is σ = 102236447272. Its totient is φ = 101789998992.

The previous prime is 102013223017. The next prime is 102013223141. The reversal of 102013223131 is 131322310201.

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 102013223131 - 2¹⁷ = 102013092059 is a prime.

It is a super-2 number, since 2×102013223131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102013223099 and 102013223108.

It is not an unprimeable number, because it can be changed into a prime (102013223141) 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, 111611385 + ... + 111612298.

It is an arithmetic number, because the mean of its divisors is an integer number (25559111818).

Almost surely, 2^102013223131 is an apocalyptic number.

102013223131 is a deficient number, since it is larger than the sum of its proper divisors (223224141).

102013223131 is an equidigital number, since it uses as much as digits as its factorization.

102013223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223224140.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 102013223131 its reverse (131322310201), we get a palindrome (233335533332).

The spelling of 102013223131 in words is "one hundred two billion, thirteen million, two hundred twenty-three thousand, one hundred thirty-one".