2151201031 has 8 divisors (see below), whose sum is σ = 2461606560. Its totient is φ = 1841568288.

The previous prime is 2151201007. The next prime is 2151201037. The reversal of 2151201031 is 1301021512.

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

It is not a de Polignac number, because 2151201031 - 2⁷ = 2151200903 is a prime.

It is a super-2 number, since 2×2151201031² = 9255331751550925922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2151200996 and 2151201014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151201037) 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, 187216 + ... + 198373.

It is an arithmetic number, because the mean of its divisors is an integer number (307700820).

Almost surely, 2^2151201031 is an apocalyptic number.

2151201031 is a deficient number, since it is larger than the sum of its proper divisors (310405529).

2151201031 is an equidigital number, since it uses as much as digits as its factorization.

2151201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386393.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 2151201031 is about 46381.0417196509. The cubic root of 2151201031 is about 1290.9031655696.

Adding to 2151201031 its reverse (1301021512), we get a palindrome (3452222543).

The spelling of 2151201031 in words is "two billion, one hundred fifty-one million, two hundred one thousand, thirty-one".