93420031 has 2 divisors, whose sum is σ = 93420032. Its totient is φ = 93420030.

The previous prime is 93420029. The next prime is 93420053. The reversal of 93420031 is 13002439.

It is an a-pointer prime, because the next prime (93420053) can be obtained adding 93420031 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (13002439) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93420031 - 2¹ = 93420029 is a prime.

It is a super-2 number, since 2×93420031² = 17454604384081922, which contains 22 as substring.

Together with 93420029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 93419984 and 93420011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93420001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46710015 + 46710016.

It is an arithmetic number, because the mean of its divisors is an integer number (46710016).

Almost surely, 2^93420031 is an apocalyptic number.

93420031 is the 4323-rd centered decagonal number.

93420031 is a deficient number, since it is larger than the sum of its proper divisors (1).

93420031 is an equidigital number, since it uses as much as digits as its factorization.

93420031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 93420031 is about 9665.4038198101. The cubic root of 93420031 is about 453.7465497186.

The spelling of 93420031 in words is "ninety-three million, four hundred twenty thousand, thirty-one".