31838461 has 2 divisors, whose sum is σ = 31838462. Its totient is φ = 31838460.

The previous prime is 31838453. The next prime is 31838473. The reversal of 31838461 is 16483813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19412836 + 12425625 = 4406^2 + 3525^2 .

It is a cyclic number.

It is not a de Polignac number, because 31838461 - 2³ = 31838453 is a prime.

It is equal to p_1964446 and since 31838461 and 1964446 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31838441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15919230 + 15919231.

It is an arithmetic number, because the mean of its divisors is an integer number (15919231).

Almost surely, 2^31838461 is an apocalyptic number.

It is an amenable number.

31838461 is a deficient number, since it is larger than the sum of its proper divisors (1).

31838461 is an equidigital number, since it uses as much as digits as its factorization.

31838461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 31838461 is about 5642.5580191966. The cubic root of 31838461 is about 316.9450856390.

The spelling of 31838461 in words is "thirty-one million, eight hundred thirty-eight thousand, four hundred sixty-one".