2151403531 has 2 divisors, whose sum is σ = 2151403532. Its totient is φ = 2151403530.

The previous prime is 2151403519. The next prime is 2151403543. The reversal of 2151403531 is 1353041512.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2151403519) and next prime (2151403543).

It is a cyclic number.

It is not a de Polignac number, because 2151403531 - 2¹⁹ = 2150879243 is a prime.

It is a super-2 number, since 2×2151403531² = 9257074306398535922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2151403496 and 2151403505.

It is not a weakly prime, because it can be changed into another prime (2151403561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075701765 + 1075701766.

It is an arithmetic number, because the mean of its divisors is an integer number (1075701766).

Almost surely, 2^2151403531 is an apocalyptic number.

2151403531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151403531 is an equidigital number, since it uses as much as digits as its factorization.

2151403531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2151403531 is about 46383.2246722886. The cubic root of 2151403531 is about 1290.9436700266.

The spelling of 2151403531 in words is "two billion, one hundred fifty-one million, four hundred three thousand, five hundred thirty-one".