20451150031 has 8 divisors (see below), whose sum is σ = 22028699504. Its totient is φ = 18874226880.

The previous prime is 20451150029. The next prime is 20451150047. The reversal of 20451150031 is 13005115402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20451150031 - 2¹ = 20451150029 is a prime.

It is a super-2 number, since 2×20451150031² (a number of 21 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 = 20451149984 and 20451150011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20451150431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87630 + ... + 220411.

It is an arithmetic number, because the mean of its divisors is an integer number (2753587438).

Almost surely, 2^20451150031 is an apocalyptic number.

20451150031 is a deficient number, since it is larger than the sum of its proper divisors (1577549473).

20451150031 is a wasteful number, since it uses less digits than its factorization.

20451150031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313161.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 20451150031 its reverse (13005115402), we get a palindrome (33456265433).

The spelling of 20451150031 in words is "twenty billion, four hundred fifty-one million, one hundred fifty thousand, thirty-one".