551213325031 has 16 divisors (see below), whose sum is σ = 572866560000. Its totient is φ = 529807299840.

The previous prime is 551213324993. The next prime is 551213325041. The reversal of 551213325031 is 130523312155.

It is a cyclic number.

It is not a de Polignac number, because 551213325031 - 2¹³ = 551213316839 is a prime.

It is a super-2 number, since 2×551213325031² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551213324984 and 551213325002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551213325041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6423450 + ... + 6508696.

It is an arithmetic number, because the mean of its divisors is an integer number (35804160000).

Almost surely, 2^551213325031 is an apocalyptic number.

551213325031 is a deficient number, since it is larger than the sum of its proper divisors (21653234969).

551213325031 is a wasteful number, since it uses less digits than its factorization.

551213325031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86694.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 551213325031 its reverse (130523312155), we get a palindrome (681736637186).

The spelling of 551213325031 in words is "five hundred fifty-one billion, two hundred thirteen million, three hundred twenty-five thousand, thirty-one".