101031398 has 16 divisors (see below), whose sum is σ = 171795120. Its totient is φ = 44175456.

The previous prime is 101031397. The next prime is 101031407. The reversal of 101031398 is 893130101.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101031397) 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, 101765 + ... + 102752.

It is an arithmetic number, because the mean of its divisors is an integer number (10737195).

Almost surely, 2^101031398 is an apocalyptic number.

101031398 is a deficient number, since it is larger than the sum of its proper divisors (70763722).

101031398 is a wasteful number, since it uses less digits than its factorization.

101031398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204551.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 101031398 is about 10051.4376086210. The cubic root of 101031398 is about 465.7492034653.

Adding to 101031398 its reverse (893130101), we get a palindrome (994161499).

The spelling of 101031398 in words is "one hundred one million, thirty-one thousand, three hundred ninety-eight".