61010131 has 16 divisors (see below), whose sum is σ = 75273408. Its totient is φ = 48153600.

The previous prime is 61010129. The next prime is 61010141. The reversal of 61010131 is 13101016.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61010131 - 2¹ = 61010129 is a prime.

It is a super-3 number, since 3×61010131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (61010101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68811 + ... + 69691.

It is an arithmetic number, because the mean of its divisors is an integer number (4704588).

Almost surely, 2^61010131 is an apocalyptic number.

61010131 is a deficient number, since it is larger than the sum of its proper divisors (14263277).

61010131 is a wasteful number, since it uses less digits than its factorization.

61010131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 61010131 is about 7810.8982197952. The cubic root of 61010131 is about 393.6715098104.

Adding to 61010131 its reverse (13101016), we get a palindrome (74111147).

The spelling of 61010131 in words is "sixty-one million, ten thousand, one hundred thirty-one".