2231545631406 has 96 divisors (see below), whose sum is σ = 5797359203328. Its totient is φ = 557563694400.

The previous prime is 2231545631321. The next prime is 2231545631407. The reversal of 2231545631406 is 6041365451322.

It is a super-3 number, since 3×2231545631406³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231545631407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5463670 + ... + 5857881.

It is an arithmetic number, because the mean of its divisors is an integer number (60389158368).

Almost surely, 2^{2231545631406} is an apocalyptic number.

2231545631406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2231545631406 is an abundant number, since it is smaller than the sum of its proper divisors (3565813571922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231545631406 is a wasteful number, since it uses less digits than its factorization.

2231545631406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11321614 (or 11321595 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 2231545631406 in words is "two trillion, two hundred thirty-one billion, five hundred forty-five million, six hundred thirty-one thousand, four hundred six".