101131155 has 24 divisors (see below), whose sum is σ = 178605648. Its totient is φ = 52917696.

The previous prime is 101131153. The next prime is 101131159. The reversal of 101131155 is 551131101.

It is not a de Polignac number, because 101131155 - 2¹ = 101131153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101131153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18817 + ... + 23586.

It is an arithmetic number, because the mean of its divisors is an integer number (7441902).

Almost surely, 2^101131155 is an apocalyptic number.

101131155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101131155 is a deficient number, since it is larger than the sum of its proper divisors (77474493).

101131155 is a wasteful number, since it uses less digits than its factorization.

101131155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42467 (or 42464 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 18.

The square root of 101131155 is about 10056.3987092796. The cubic root of 101131155 is about 465.9024444732.

Adding to 101131155 its reverse (551131101), we get a palindrome (652262256).

The spelling of 101131155 in words is "one hundred one million, one hundred thirty-one thousand, one hundred fifty-five".