89221031 has 2 divisors, whose sum is σ = 89221032. Its totient is φ = 89221030.

The previous prime is 89221009. The next prime is 89221057. The reversal of 89221031 is 13012298.

It is an a-pointer prime, because the next prime (89221057) can be obtained adding 89221031 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89221031 - 2¹⁸ = 88958887 is a prime.

It is a super-2 number, since 2×89221031² = 15920784745405922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89221061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44610515 + 44610516.

It is an arithmetic number, because the mean of its divisors is an integer number (44610516).

Almost surely, 2^89221031 is an apocalyptic number.

89221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

89221031 is an equidigital number, since it uses as much as digits as its factorization.

89221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 89221031 is about 9445.6884873470. The cubic root of 89221031 is about 446.8438096541.

The spelling of 89221031 in words is "eighty-nine million, two hundred twenty-one thousand, thirty-one".