101023156 has 12 divisors (see below), whose sum is σ = 190389892. Its totient is φ = 46626048.

The previous prime is 101023127. The next prime is 101023157. The reversal of 101023156 is 651320101.

It can be written as a sum of positive squares in 2 ways, for example, as 66683556 + 34339600 = 8166^2 + 5860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101023157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971325 + ... + 971428.

Almost surely, 2^101023156 is an apocalyptic number.

It is an amenable number.

101023156 is a deficient number, since it is larger than the sum of its proper divisors (89366736).

101023156 is a wasteful number, since it uses less digits than its factorization.

101023156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942770 (or 1942768 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 101023156 is about 10051.0276091552. The cubic root of 101023156 is about 465.7365380649.

Adding to 101023156 its reverse (651320101), we get a palindrome (752343257).

The spelling of 101023156 in words is "one hundred one million, twenty-three thousand, one hundred fifty-six".