61031 has 2 divisors, whose sum is σ = 61032. Its totient is φ = 61030.

The previous prime is 61027. The next prime is 61043. The reversal of 61031 is 13016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61031 - 2² = 61027 is a prime.

It is a super-2 number, since 2×61031² = 7449565922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 61031.

It is not a weakly prime, because it can be changed into another prime (61001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515 + 30516.

It is an arithmetic number, because the mean of its divisors is an integer number (30516).

2⁶¹⁰³¹ is an apocalyptic number.

61031 is a deficient number, since it is larger than the sum of its proper divisors (1).

61031 is an equidigital number, since it uses as much as digits as its factorization.

61031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 61031 is about 247.0445303989. The cubic root of 61031 is about 39.3716390849.

Adding to 61031 its reverse (13016), we get a palindrome (74047).

The spelling of 61031 in words is "sixty-one thousand, thirty-one".