61888031 has 2 divisors, whose sum is σ = 61888032. Its totient is φ = 61888030.

The previous prime is 61887979. The next prime is 61888061. The reversal of 61888031 is 13088816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61888031 - 2¹⁴ = 61871647 is a prime.

It is a super-2 number, since 2×61888031² = 7660256762113922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61887982 and 61888000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61888061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30944015 + 30944016.

It is an arithmetic number, because the mean of its divisors is an integer number (30944016).

Almost surely, 2^61888031 is an apocalyptic number.

61888031 is a deficient number, since it is larger than the sum of its proper divisors (1).

61888031 is an equidigital number, since it uses as much as digits as its factorization.

61888031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 61888031 is about 7866.8946224034. The cubic root of 61888031 is about 395.5507587049.

The spelling of 61888031 in words is "sixty-one million, eight hundred eighty-eight thousand, thirty-one".