65406031 has 2 divisors, whose sum is σ = 65406032. Its totient is φ = 65406030.

The previous prime is 65406023. The next prime is 65406067. The reversal of 65406031 is 13060456.

65406031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65406031 - 2³ = 65406023 is a prime.

It is a super-2 number, since 2×65406031² = 8555897782345922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65405987 and 65406005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65406331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32703015 + 32703016.

It is an arithmetic number, because the mean of its divisors is an integer number (32703016).

Almost surely, 2^65406031 is an apocalyptic number.

65406031 is a deficient number, since it is larger than the sum of its proper divisors (1).

65406031 is an equidigital number, since it uses as much as digits as its factorization.

65406031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 65406031 is about 8087.3995202413. The cubic root of 65406031 is about 402.9080382990.

Adding to 65406031 its reverse (13060456), we get a palindrome (78466487).

The spelling of 65406031 in words is "sixty-five million, four hundred six thousand, thirty-one".