61431504203 has 2 divisors, whose sum is σ = 61431504204. Its totient is φ = 61431504202.

The previous prime is 61431504161. The next prime is 61431504221. The reversal of 61431504203 is 30240513416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61431504203 - 2⁶ = 61431504139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (61431504503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30715752101 + 30715752102.

It is an arithmetic number, because the mean of its divisors is an integer number (30715752102).

Almost surely, 2^61431504203 is an apocalyptic number.

61431504203 is a deficient number, since it is larger than the sum of its proper divisors (1).

61431504203 is an equidigital number, since it uses as much as digits as its factorization.

61431504203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 61431504203 in words is "sixty-one billion, four hundred thirty-one million, five hundred four thousand, two hundred three".