61313231351 has 2 divisors, whose sum is σ = 61313231352. Its totient is φ = 61313231350.

The previous prime is 61313231311. The next prime is 61313231359. The reversal of 61313231351 is 15313231316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61313231351 - 2³⁴ = 44133362167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61313231359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30656615675 + 30656615676.

It is an arithmetic number, because the mean of its divisors is an integer number (30656615676).

Almost surely, 2^61313231351 is an apocalyptic number.

61313231351 is a deficient number, since it is larger than the sum of its proper divisors (1).

61313231351 is an equidigital number, since it uses as much as digits as its factorization.

61313231351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 29.

Adding to 61313231351 its reverse (15313231316), we get a palindrome (76626462667).

The spelling of 61313231351 in words is "sixty-one billion, three hundred thirteen million, two hundred thirty-one thousand, three hundred fifty-one".