110031421 has 2 divisors, whose sum is σ = 110031422. Its totient is φ = 110031420.

The previous prime is 110031419. The next prime is 110031443. The reversal of 110031421 is 124130011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89510521 + 20520900 = 9461^2 + 4530^2 .

It is a cyclic number.

It is not a de Polignac number, because 110031421 - 2¹ = 110031419 is a prime.

Together with 110031419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110032421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55015710 + 55015711.

It is an arithmetic number, because the mean of its divisors is an integer number (55015711).

Almost surely, 2^110031421 is an apocalyptic number.

It is an amenable number.

110031421 is a deficient number, since it is larger than the sum of its proper divisors (1).

110031421 is an equidigital number, since it uses as much as digits as its factorization.

110031421 is an evil number, because the sum of its binary digits is even.

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

The square root of 110031421 is about 10489.5863121479. The cubic root of 110031421 is about 479.1876029399.

Adding to 110031421 its reverse (124130011), we get a palindrome (234161432).

The spelling of 110031421 in words is "one hundred ten million, thirty-one thousand, four hundred twenty-one".