2131255031 has 8 divisors (see below), whose sum is σ = 2257274304. Its totient is φ = 2005308160.

The previous prime is 2131255013. The next prime is 2131255057. The reversal of 2131255031 is 1305521312.

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 2131255031 - 2¹⁸ = 2130992887 is a prime.

It is a super-2 number, since 2×2131255031² = 9084496014325621922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131254988 and 2131255006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131255001) 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, 49826 + ... + 82128.

It is an arithmetic number, because the mean of its divisors is an integer number (282159288).

Almost surely, 2^2131255031 is an apocalyptic number.

2131255031 is a deficient number, since it is larger than the sum of its proper divisors (126019273).

2131255031 is a wasteful number, since it uses less digits than its factorization.

2131255031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36201.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2131255031 is about 46165.5177703012. The cubic root of 2131255031 is about 1286.9010063909.

Adding to 2131255031 its reverse (1305521312), we get a palindrome (3436776343).

The spelling of 2131255031 in words is "two billion, one hundred thirty-one million, two hundred fifty-five thousand, thirty-one".