101213031 has 16 divisors (see below), whose sum is σ = 136552448. Its totient is φ = 66679200.

The previous prime is 101213029. The next prime is 101213039. The reversal of 101213031 is 130312101.

It is not a de Polignac number, because 101213031 - 2¹ = 101213029 is a prime.

It is a super-2 number, since 2×101213031² = 20488155288413922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101212998 and 101213016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101213039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160086 + ... + 160716.

It is an arithmetic number, because the mean of its divisors is an integer number (8534528).

Almost surely, 2^101213031 is an apocalyptic number.

101213031 is a deficient number, since it is larger than the sum of its proper divisors (35339417).

101213031 is a wasteful number, since it uses less digits than its factorization.

101213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 101213031 is about 10060.4687266548. The cubic root of 101213031 is about 466.0281424303.

Adding to 101213031 its reverse (130312101), we get a palindrome (231525132).

The spelling of 101213031 in words is "one hundred one million, two hundred thirteen thousand, thirty-one".