61431165703 has 2 divisors, whose sum is σ = 61431165704. Its totient is φ = 61431165702.

The previous prime is 61431165701. The next prime is 61431165737. The reversal of 61431165703 is 30756113416.

61431165703 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 61431165703 - 2¹ = 61431165701 is a prime.

Together with 61431165701, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61431165701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30715582851 + 30715582852.

It is an arithmetic number, because the mean of its divisors is an integer number (30715582852).

Almost surely, 2^61431165703 is an apocalyptic number.

61431165703 is a deficient number, since it is larger than the sum of its proper divisors (1).

61431165703 is an equidigital number, since it uses as much as digits as its factorization.

61431165703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 61431165703 in words is "sixty-one billion, four hundred thirty-one million, one hundred sixty-five thousand, seven hundred three".