531211142000 has 160 divisors (see below), whose sum is σ = 1601415788544. Its totient is φ = 165572256000.

The previous prime is 531211141973. The next prime is 531211142017. The reversal of 531211142000 is 241112135.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1570712 + ... + 1878711.

Almost surely, 2^531211142000 is an apocalyptic number.

531211142000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531211142000 is an abundant number, since it is smaller than the sum of its proper divisors (1070204646544).

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

531211142000 is a wasteful number, since it uses less digits than its factorization.

531211142000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449464 (or 3449448 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 531211142000 its reverse (241112135), we get a palindrome (531452254135).

The spelling of 531211142000 in words is "five hundred thirty-one billion, two hundred eleven million, one hundred forty-two thousand".