40215201231 has 4 divisors (see below), whose sum is σ = 53620268312. Its totient is φ = 26810134152.

The previous prime is 40215201197. The next prime is 40215201283. The reversal of 40215201231 is 13210251204.

40215201231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40215201231 - 2⁶ = 40215201167 is a prime.

It is a super-2 number, since 2×40215201231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40215201198 and 40215201207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40215201331) 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, 6702533536 + ... + 6702533541.

It is an arithmetic number, because the mean of its divisors is an integer number (13405067078).

Almost surely, 2^40215201231 is an apocalyptic number.

40215201231 is a deficient number, since it is larger than the sum of its proper divisors (13405067081).

40215201231 is a wasteful number, since it uses less digits than its factorization.

40215201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13405067080.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 40215201231 its reverse (13210251204), we get a palindrome (53425452435).

The spelling of 40215201231 in words is "forty billion, two hundred fifteen million, two hundred one thousand, two hundred thirty-one".