61311193 has 2 divisors, whose sum is σ = 61311194. Its totient is φ = 61311192.

The previous prime is 61311143. The next prime is 61311221. The reversal of 61311193 is 39111316.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56972304 + 4338889 = 7548^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 61311193 - 2¹³ = 61303001 is a prime.

It is not a weakly prime, because it can be changed into another prime (61311143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30655596 + 30655597.

It is an arithmetic number, because the mean of its divisors is an integer number (30655597).

Almost surely, 2^61311193 is an apocalyptic number.

It is an amenable number.

61311193 is a deficient number, since it is larger than the sum of its proper divisors (1).

61311193 is an equidigital number, since it uses as much as digits as its factorization.

61311193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 25.

The square root of 61311193 is about 7830.1464226412. The cubic root of 61311193 is about 394.3179877702.

It can be divided in two parts, 61311 and 193, that added together give a square (61504 = 248²).

The spelling of 61311193 in words is "sixty-one million, three hundred eleven thousand, one hundred ninety-three".