1102020031 has 4 divisors (see below), whose sum is σ = 1259451472. Its totient is φ = 944588592.

The previous prime is 1102020013. The next prime is 1102020041. The reversal of 1102020031 is 1300202011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300202011 = 3701 ⋅351311.

It is a cyclic number.

It is not a de Polignac number, because 1102020031 - 2¹⁹ = 1101495743 is a prime.

It is a super-2 number, since 2×1102020031² = 2428896297450481922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102020041) 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, 78715710 + ... + 78715723.

It is an arithmetic number, because the mean of its divisors is an integer number (314862868).

Almost surely, 2^1102020031 is an apocalyptic number.

1102020031 is a deficient number, since it is larger than the sum of its proper divisors (157431441).

1102020031 is an equidigital number, since it uses as much as digits as its factorization.

1102020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157431440.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1102020031 is about 33196.6870485595. The cubic root of 1102020031 is about 1032.9116193038.

Adding to 1102020031 its reverse (1300202011), we get a palindrome (2402222042).

The spelling of 1102020031 in words is "one billion, one hundred two million, twenty thousand, thirty-one".