61419731 has 2 divisors, whose sum is σ = 61419732. Its totient is φ = 61419730.

The previous prime is 61419727. The next prime is 61419749. The reversal of 61419731 is 13791416.

61419731 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 61419731 - 2² = 61419727 is a prime.

It is a super-2 number, since 2×61419731² = 7544766712224722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61419031) 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, 30709865 + 30709866.

It is an arithmetic number, because the mean of its divisors is an integer number (30709866).

Almost surely, 2^61419731 is an apocalyptic number.

61419731 is a deficient number, since it is larger than the sum of its proper divisors (1).

61419731 is an equidigital number, since it uses as much as digits as its factorization.

61419731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 61419731 is about 7837.0741351604. The cubic root of 61419731 is about 394.5505350608.

The spelling of 61419731 in words is "sixty-one million, four hundred nineteen thousand, seven hundred thirty-one".