61035631 has 2 divisors, whose sum is σ = 61035632. Its totient is φ = 61035630.

The previous prime is 61035589. The next prime is 61035641. The reversal of 61035631 is 13653016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61035631 - 2²¹ = 58938479 is a prime.

It is a super-2 number, since 2×61035631² = 7450696503136322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61035596 and 61035605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61035641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30517815 + 30517816.

It is an arithmetic number, because the mean of its divisors is an integer number (30517816).

Almost surely, 2^61035631 is an apocalyptic number.

61035631 is a deficient number, since it is larger than the sum of its proper divisors (1).

61035631 is an equidigital number, since it uses as much as digits as its factorization.

61035631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 61035631 is about 7812.5303839409. The cubic root of 61035631 is about 393.7263489279.

Adding to 61035631 its reverse (13653016), we get a palindrome (74688647).

The spelling of 61035631 in words is "sixty-one million, thirty-five thousand, six hundred thirty-one".