40212352531 has 4 divisors (see below), whose sum is σ = 43305610432. Its totient is φ = 37119094632.

The previous prime is 40212352511. The next prime is 40212352541. The reversal of 40212352531 is 13525321204.

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

It is a cyclic number.

It is not a de Polignac number, because 40212352531 - 2¹¹ = 40212350483 is a prime.

It is a super-2 number, since 2×40212352531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40212352531.

It is not an unprimeable number, because it can be changed into a prime (40212352501) 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, 1546628931 + ... + 1546628956.

It is an arithmetic number, because the mean of its divisors is an integer number (10826402608).

Almost surely, 2^40212352531 is an apocalyptic number.

40212352531 is a deficient number, since it is larger than the sum of its proper divisors (3093257901).

40212352531 is a wasteful number, since it uses less digits than its factorization.

40212352531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093257900.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 40212352531 its reverse (13525321204), we get a palindrome (53737673735).

The spelling of 40212352531 in words is "forty billion, two hundred twelve million, three hundred fifty-two thousand, five hundred thirty-one".