61131010 has 16 divisors (see below), whose sum is σ = 114820416. Its totient is φ = 23389168.

The previous prime is 61130989. The next prime is 61131011. The reversal of 61131010 is 1013116.

61131010 = 110² + 111² + ... + 569².

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61131011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132664 + ... + 133123.

It is an arithmetic number, because the mean of its divisors is an integer number (7176276).

Almost surely, 2^61131010 is an apocalyptic number.

61131010 is a deficient number, since it is larger than the sum of its proper divisors (53689406).

61131010 is a wasteful number, since it uses less digits than its factorization.

61131010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265817.

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

The square root of 61131010 is about 7818.6322333257. The cubic root of 61131010 is about 393.9313312778.

Adding to 61131010 its reverse (1013116), we get a palindrome (62144126).

The spelling of 61131010 in words is "sixty-one million, one hundred thirty-one thousand, ten".