37421231 has 2 divisors, whose sum is σ = 37421232. Its totient is φ = 37421230.

The previous prime is 37421227. The next prime is 37421249. The reversal of 37421231 is 13212473.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 37421231 - 2² = 37421227 is a prime.

It is a super-2 number, since 2×37421231² = 2800697059110722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 37421197 and 37421206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37421831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18710615 + 18710616.

It is an arithmetic number, because the mean of its divisors is an integer number (18710616).

Almost surely, 2^37421231 is an apocalyptic number.

37421231 is a deficient number, since it is larger than the sum of its proper divisors (1).

37421231 is an equidigital number, since it uses as much as digits as its factorization.

37421231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 37421231 is about 6117.2895141558. The cubic root of 37421231 is about 334.4819526967.

The spelling of 37421231 in words is "thirty-seven million, four hundred twenty-one thousand, two hundred thirty-one".